Whakaoti i te z=15/4-5/27/5=

$$z = \frac{ 15 }{ 4 } - \frac{ 5 }{ 2 } \frac{ 7 }{ 5 } =$$

Whakaoti mō z

$$z=\frac{1}{4}=0.25$$

Ngā Upane mō te Whakaoti Whārite Rārangi

Me whakarea te \frac{5}{2} ki te \frac{7}{5} mā te whakarea taurunga ki te taurunga me te tauraro ki te tauraro.

$$z=\frac{15}{4}-\frac{5\times 7}{2\times 5}$$

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

$$z=\frac{15}{4}-\frac{7}{2}$$

Ko te maha noa iti rawa atu o 4 me 2 ko 4. Me tahuri \frac{15}{4} me \frac{7}{2} ki te hautau me te tautūnga 4.

$$z=\frac{15}{4}-\frac{14}{4}$$

Tā te mea he rite te tauraro o \frac{15}{4} me \frac{14}{4}, me tango rāua mā te tango i ō raua taurunga.

$$z=\frac{15-14}{4}$$

Tangohia te 14 i te 15, ka 1.

$$z=\frac{1}{4}$$

Tautapa z

$$z≔\frac{1}{4}$$