Whakaoti i te 10.997-9.052/10.997100=left(780-740right)z

$$\frac{ 10.997-9.052 }{ 10.997 } 100 = \left( 780-740 \right) z$$

Whakaoti mō z

$$z=\frac{9725}{21994}\approx 0.442166045$$

Ngā Upane mō te Whakaoti Whārite Rārangi

Tangohia te 9.052 i te 10.997, ka 1.945.

$$\frac{1.945}{10.997}\times 100=\left(780-740\right)z$$

Whakarohaina te \frac{1.945}{10.997} mā te whakarea i te taurunga me te tauraro ki te 1000.

$$\frac{1945}{10997}\times 100=\left(780-740\right)z$$

Tuhia te \frac{1945}{10997}\times 100 hei hautanga kotahi.

$$\frac{1945\times 100}{10997}=\left(780-740\right)z$$

Whakareatia te 1945 ki te 100, ka 194500.

$$\frac{194500}{10997}=\left(780-740\right)z$$

Tangohia te 740 i te 780, ka 40.

$$\frac{194500}{10997}=40z$$

Whakawhitihia ngā taha kia puta ki te taha mauī ngā kīanga tau taurangi katoa.

$$40z=\frac{194500}{10997}$$

Whakawehea ngā taha e rua ki te 40.

$$z=\frac{\frac{194500}{10997}}{40}$$

Tuhia te \frac{\frac{194500}{10997}}{40} hei hautanga kotahi.

$$z=\frac{194500}{10997\times 40}$$

Whakareatia te 10997 ki te 40, ka 439880.

$$z=\frac{194500}{439880}$$

Whakahekea te hautanga \frac{194500}{439880} ki ōna wāhi pāpaku rawa mā te tango me te whakakore i te 20.

$$z=\frac{9725}{21994}$$