Whakaoti i te A=(15/4-5/2)*7/5

$$A = ( \frac { 15 } { 4 } - \frac { 5 } { 2 } ) \times \frac { 7 } { 5 }$$

Whakaoti mō A

$$A = \frac{7}{4} = 1\frac{3}{4} = 1.75$$

Ngā Upane mō te Whakaoti Whārite Rārangi

Ko te maha noa iti rawa atu o 4 me 2 ko 4. Me tahuri \frac{15}{4} me \frac{5}{2} ki te hautau me te tautūnga 4.

$$A=\left(\frac{15}{4}-\frac{10}{4}\right)\times \frac{7}{5}$$

Tā te mea he rite te tauraro o \frac{15}{4} me \frac{10}{4}, me tango rāua mā te tango i ō raua taurunga.

$$A=\frac{15-10}{4}\times \frac{7}{5}$$

Tangohia te 10 i te 15, ka 5.

$$A=\frac{5}{4}\times \frac{7}{5}$$

Me whakarea te \frac{5}{4} ki te \frac{7}{5} mā te whakarea taurunga ki te taurunga me te tauraro ki te tauraro.

$$A=\frac{5\times 7}{4\times 5}$$

Me whakakore tahi te 5 i te taurunga me te tauraro.

$$A=\frac{7}{4}$$

Tautapa A

$$A≔\frac{7}{4}$$