Datrys =-10.000+2000/(1+01)+4000/(101)^2+7000/(1013^3)

$$= - 10.000 + \frac { 2000 } { ( 1 + 01 ) } + \frac { 4000 } { ( 101 ) ^ { 2 } } + \frac { 7000 } { ( 1013 ^ { 3 } ) }$$

Enrhifo

$$\frac{21106184412203030}{10604033318597}\approx 1990.392125154$$

Camau Ateb

Lluosi 0 a 1 i gael 0.

$$-10+\frac{2000}{1+0}+\frac{4000}{101^{2}}+\frac{7000}{1013^{3}}$$

Adio 1 a 0 i gael 1.

$$-10+\frac{2000}{1}+\frac{4000}{101^{2}}+\frac{7000}{1013^{3}}$$

Mae rhannu unrhyw beth ag un yn rhoi'r rhif hwnnw.

$$-10+2000+\frac{4000}{101^{2}}+\frac{7000}{1013^{3}}$$

Adio -10 a 2000 i gael 1990.

$$1990+\frac{4000}{101^{2}}+\frac{7000}{1013^{3}}$$

Cyfrifo 101 i bŵer 2 a chael 10201.

$$1990+\frac{4000}{10201}+\frac{7000}{1013^{3}}$$

Troswch y rhif degol 1990 i’r ffracsiwn \frac{20299990}{10201}.

$$\frac{20299990}{10201}+\frac{4000}{10201}+\frac{7000}{1013^{3}}$$

Gan fod gan \frac{20299990}{10201} a \frac{4000}{10201} yr un dynodydd, adiwch nhw drwy adio eu rhifiaduron.

$$\frac{20299990+4000}{10201}+\frac{7000}{1013^{3}}$$

Adio 20299990 a 4000 i gael 20303990.

$$\frac{20303990}{10201}+\frac{7000}{1013^{3}}$$

Cyfrifo 1013 i bŵer 3 a chael 1039509197.

$$\frac{20303990}{10201}+\frac{7000}{1039509197}$$

Lluosrif lleiaf cyffredin 10201 a 1039509197 yw 10604033318597. Troswch \frac{20303990}{10201} a \frac{7000}{1039509197} yn ffracsiynau gyda’r enwadur 10604033318597.

$$\frac{21106184340796030}{10604033318597}+\frac{71407000}{10604033318597}$$

Gan fod gan \frac{21106184340796030}{10604033318597} a \frac{71407000}{10604033318597} yr un dynodydd, adiwch nhw drwy adio eu rhifiaduron.

$$\frac{21106184340796030+71407000}{10604033318597}$$

Adio 21106184340796030 a 71407000 i gael 21106184412203030.

$$\frac{21106184412203030}{10604033318597}$$

Ffactor

$$\frac{2 \cdot 5 \cdot 7 \cdot 43 \cdot 2053 \cdot 3415499951}{101 ^ {2} \cdot 1013 ^ {3}} = 1990\frac{4158108195002}{10604033318597} = 1990.3921251537101$$