ដោះស្រាយ 56000=A*1-(1+815%/12)^-48/frac{8*15%{12}}*(1+815%/12)

$$56000 = A \times \frac { 1 - ( 1 + \frac { 815 \% } { 12 } ) ^ { - 48 } } { \frac { 8 \cdot 15 \% } { 12 } } \times ( 1 + \frac { 815 \% } { 12 } )$$

ដោះស្រាយសម្រាប់ A

$$A = \frac{54030426698114409819999137509109707127919122304162476822781960907846965021253378435419832549540219945655172877749112326333504000}{16201087767112029569902656015869084775724866713770829454553676701369207240651279396930202765970765355728448414979830556184823} = 3334\frac{1.6000082562897289 \times 10^{124}}{1.6201087767112032 \times 10^{124}} \approx 3334.987593104$$

ជំហានសម្រាប់ការដោះស្រាយសមីការលីនេអ៊ែរ

ធ្វើប្រមាណវិធីគុណជ្រុងទាំងពីរនៃសមីការរដោយ 12។

$$672000=12A\times \frac{1-\left(1+\frac{\frac{815}{100}}{12}\right)^{-48}}{\frac{8\times \frac{15}{100}}{12}}\left(1+\frac{\frac{815}{100}}{12}\right)$$

កាត់បន្ថយប្រភាគ \frac{815}{100} ទៅតួដែលតូចបំផុតដោយ​ដក និងលុបចេញ 5។

$$672000=12A\times \frac{1-\left(1+\frac{\frac{163}{20}}{12}\right)^{-48}}{\frac{8\times \frac{15}{100}}{12}}\left(1+\frac{\frac{815}{100}}{12}\right)$$

បង្ហាញ \frac{\frac{163}{20}}{12} ជាប្រភាគទោល។

$$672000=12A\times \frac{1-\left(1+\frac{163}{20\times 12}\right)^{-48}}{\frac{8\times \frac{15}{100}}{12}}\left(1+\frac{\frac{815}{100}}{12}\right)$$

គុណ 20 និង 12 ដើម្បីបាន 240។

$$672000=12A\times \frac{1-\left(1+\frac{163}{240}\right)^{-48}}{\frac{8\times \frac{15}{100}}{12}}\left(1+\frac{\frac{815}{100}}{12}\right)$$

បូក 1 និង \frac{163}{240} ដើម្បីបាន \frac{403}{240}។

$$672000=12A\times \frac{1-\left(\frac{403}{240}\right)^{-48}}{\frac{8\times \frac{15}{100}}{12}}\left(1+\frac{\frac{815}{100}}{12}\right)$$

គណនាស្វ័យគុណ \frac{403}{240} នៃ -48 ហើយបាន \frac{1778851122450430889808135593631174089945225899275983120948501938176000000000000000000000000000000000000000000000000}{113407614371563058111769023000891729023705241086341032081151720030532952622734955778511419361795357490099138904858813893293761}។

$$672000=12A\times \frac{1-\frac{1778851122450430889808135593631174089945225899275983120948501938176000000000000000000000000000000000000000000000000}{113407614371563058111769023000891729023705241086341032081151720030532952622734955778511419361795357490099138904858813893293761}}{\frac{8\times \frac{15}{100}}{12}}\left(1+\frac{\frac{815}{100}}{12}\right)$$

ដក​ \frac{1778851122450430889808135593631174089945225899275983120948501938176000000000000000000000000000000000000000000000000}{113407614371563058111769023000891729023705241086341032081151720030532952622734955778511419361795357490099138904858813893293761} ពី 1 ដើម្បីបាន \frac{113407614369784206989318592111083593430074066996395806181875736909584450684558955778511419361795357490099138904858813893293761}{113407614371563058111769023000891729023705241086341032081151720030532952622734955778511419361795357490099138904858813893293761}។

$$672000=12A\times \frac{\frac{113407614369784206989318592111083593430074066996395806181875736909584450684558955778511419361795357490099138904858813893293761}{113407614371563058111769023000891729023705241086341032081151720030532952622734955778511419361795357490099138904858813893293761}}{\frac{8\times \frac{15}{100}}{12}}\left(1+\frac{\frac{815}{100}}{12}\right)$$

កាត់បន្ថយប្រភាគ \frac{15}{100} ទៅតួដែលតូចបំផុតដោយ​ដក និងលុបចេញ 5។

$$672000=12A\times \frac{\frac{113407614369784206989318592111083593430074066996395806181875736909584450684558955778511419361795357490099138904858813893293761}{113407614371563058111769023000891729023705241086341032081151720030532952622734955778511419361795357490099138904858813893293761}}{\frac{8\times \frac{3}{20}}{12}}\left(1+\frac{\frac{815}{100}}{12}\right)$$

គុណ 8 និង \frac{3}{20} ដើម្បីបាន \frac{6}{5}។

$$672000=12A\times \frac{\frac{113407614369784206989318592111083593430074066996395806181875736909584450684558955778511419361795357490099138904858813893293761}{113407614371563058111769023000891729023705241086341032081151720030532952622734955778511419361795357490099138904858813893293761}}{\frac{\frac{6}{5}}{12}}\left(1+\frac{\frac{815}{100}}{12}\right)$$

បង្ហាញ \frac{\frac{6}{5}}{12} ជាប្រភាគទោល។

$$672000=12A\times \frac{\frac{113407614369784206989318592111083593430074066996395806181875736909584450684558955778511419361795357490099138904858813893293761}{113407614371563058111769023000891729023705241086341032081151720030532952622734955778511419361795357490099138904858813893293761}}{\frac{6}{5\times 12}}\left(1+\frac{\frac{815}{100}}{12}\right)$$

គុណ 5 និង 12 ដើម្បីបាន 60។

$$672000=12A\times \frac{\frac{113407614369784206989318592111083593430074066996395806181875736909584450684558955778511419361795357490099138904858813893293761}{113407614371563058111769023000891729023705241086341032081151720030532952622734955778511419361795357490099138904858813893293761}}{\frac{6}{60}}\left(1+\frac{\frac{815}{100}}{12}\right)$$

កាត់បន្ថយប្រភាគ \frac{6}{60} ទៅតួដែលតូចបំផុតដោយ​ដក និងលុបចេញ 6។

$$672000=12A\times \frac{\frac{113407614369784206989318592111083593430074066996395806181875736909584450684558955778511419361795357490099138904858813893293761}{113407614371563058111769023000891729023705241086341032081151720030532952622734955778511419361795357490099138904858813893293761}}{\frac{1}{10}}\left(1+\frac{\frac{815}{100}}{12}\right)$$

ចែក \frac{113407614369784206989318592111083593430074066996395806181875736909584450684558955778511419361795357490099138904858813893293761}{113407614371563058111769023000891729023705241086341032081151720030532952622734955778511419361795357490099138904858813893293761} នឹង \frac{1}{10} ដោយការគុណ \frac{113407614369784206989318592111083593430074066996395806181875736909584450684558955778511419361795357490099138904858813893293761}{113407614371563058111769023000891729023705241086341032081151720030532952622734955778511419361795357490099138904858813893293761} នឹងប្រភាគផ្ទុយគ្នានៃ \frac{1}{10}.

$$672000=12A\times \frac{113407614369784206989318592111083593430074066996395806181875736909584450684558955778511419361795357490099138904858813893293761}{113407614371563058111769023000891729023705241086341032081151720030532952622734955778511419361795357490099138904858813893293761}\times 10\left(1+\frac{\frac{815}{100}}{12}\right)$$

គុណ \frac{113407614369784206989318592111083593430074066996395806181875736909584450684558955778511419361795357490099138904858813893293761}{113407614371563058111769023000891729023705241086341032081151720030532952622734955778511419361795357490099138904858813893293761} និង 10 ដើម្បីបាន \frac{1134076143697842069893185921110835934300740669963958061818757369095844506845589557785114193617953574900991389048588138932937610}{113407614371563058111769023000891729023705241086341032081151720030532952622734955778511419361795357490099138904858813893293761}។

$$672000=12A\times \frac{1134076143697842069893185921110835934300740669963958061818757369095844506845589557785114193617953574900991389048588138932937610}{113407614371563058111769023000891729023705241086341032081151720030532952622734955778511419361795357490099138904858813893293761}\left(1+\frac{\frac{815}{100}}{12}\right)$$

គុណ 12 និង \frac{1134076143697842069893185921110835934300740669963958061818757369095844506845589557785114193617953574900991389048588138932937610}{113407614371563058111769023000891729023705241086341032081151720030532952622734955778511419361795357490099138904858813893293761} ដើម្បីបាន \frac{13608913724374104838718231053330031211608888039567496741825088429150134082147074693421370323415442898811896668583057667195251320}{113407614371563058111769023000891729023705241086341032081151720030532952622734955778511419361795357490099138904858813893293761}។

$$672000=\frac{13608913724374104838718231053330031211608888039567496741825088429150134082147074693421370323415442898811896668583057667195251320}{113407614371563058111769023000891729023705241086341032081151720030532952622734955778511419361795357490099138904858813893293761}A\left(1+\frac{\frac{815}{100}}{12}\right)$$

កាត់បន្ថយប្រភាគ \frac{815}{100} ទៅតួដែលតូចបំផុតដោយ​ដក និងលុបចេញ 5។

$$672000=\frac{13608913724374104838718231053330031211608888039567496741825088429150134082147074693421370323415442898811896668583057667195251320}{113407614371563058111769023000891729023705241086341032081151720030532952622734955778511419361795357490099138904858813893293761}A\left(1+\frac{\frac{163}{20}}{12}\right)$$

បង្ហាញ \frac{\frac{163}{20}}{12} ជាប្រភាគទោល។

$$672000=\frac{13608913724374104838718231053330031211608888039567496741825088429150134082147074693421370323415442898811896668583057667195251320}{113407614371563058111769023000891729023705241086341032081151720030532952622734955778511419361795357490099138904858813893293761}A\left(1+\frac{163}{20\times 12}\right)$$

គុណ 20 និង 12 ដើម្បីបាន 240។

$$672000=\frac{13608913724374104838718231053330031211608888039567496741825088429150134082147074693421370323415442898811896668583057667195251320}{113407614371563058111769023000891729023705241086341032081151720030532952622734955778511419361795357490099138904858813893293761}A\left(1+\frac{163}{240}\right)$$

បូក 1 និង \frac{163}{240} ដើម្បីបាន \frac{403}{240}។

$$672000=\frac{13608913724374104838718231053330031211608888039567496741825088429150134082147074693421370323415442898811896668583057667195251320}{113407614371563058111769023000891729023705241086341032081151720030532952622734955778511419361795357490099138904858813893293761}A\times \frac{403}{240}$$

គុណ \frac{13608913724374104838718231053330031211608888039567496741825088429150134082147074693421370323415442898811896668583057667195251320}{113407614371563058111769023000891729023705241086341032081151720030532952622734955778511419361795357490099138904858813893293761} និង \frac{403}{240} ដើម្បីបាន \frac{113407614369784206989318592111083593430074066996395806181875736909584450684558955778511419361795357490099138904858813893293761}{562816944772025102291657682386559449249157524001692466903978759456739218971389358702289922391043957767241384143219920065974}។

$$672000=\frac{113407614369784206989318592111083593430074066996395806181875736909584450684558955778511419361795357490099138904858813893293761}{562816944772025102291657682386559449249157524001692466903978759456739218971389358702289922391043957767241384143219920065974}A$$

ប្ដូរផ្នែកទាំងពីរ ដើម្បីឲ្យតួអថេរទាំងអស់ស្ថិតនៅផ្នែកខាងឆ្វេង។

$$\frac{113407614369784206989318592111083593430074066996395806181875736909584450684558955778511419361795357490099138904858813893293761}{562816944772025102291657682386559449249157524001692466903978759456739218971389358702289922391043957767241384143219920065974}A=672000$$

គុណ​ជ្រុងទាំងពីរនឹង \frac{562816944772025102291657682386559449249157524001692466903978759456739218971389358702289922391043957767241384143219920065974}{113407614369784206989318592111083593430074066996395806181875736909584450684558955778511419361795357490099138904858813893293761}, ភាពផ្ទុយគ្នានៃ \frac{113407614369784206989318592111083593430074066996395806181875736909584450684558955778511419361795357490099138904858813893293761}{562816944772025102291657682386559449249157524001692466903978759456739218971389358702289922391043957767241384143219920065974}។

$$A=672000\times \frac{562816944772025102291657682386559449249157524001692466903978759456739218971389358702289922391043957767241384143219920065974}{113407614369784206989318592111083593430074066996395806181875736909584450684558955778511419361795357490099138904858813893293761}$$

គុណ 672000 និង \frac{562816944772025102291657682386559449249157524001692466903978759456739218971389358702289922391043957767241384143219920065974}{113407614369784206989318592111083593430074066996395806181875736909584450684558955778511419361795357490099138904858813893293761} ដើម្បីបាន \frac{54030426698114409819999137509109707127919122304162476822781960907846965021253378435419832549540219945655172877749112326333504000}{16201087767112029569902656015869084775724866713770829454553676701369207240651279396930202765970765355728448414979830556184823}។

$$A=\frac{54030426698114409819999137509109707127919122304162476822781960907846965021253378435419832549540219945655172877749112326333504000}{16201087767112029569902656015869084775724866713770829454553676701369207240651279396930202765970765355728448414979830556184823}$$