Whakaoti i te f-1(25)=2x-7

$$f - 1 ( 25 ) = 2 x - 7$$

Whakaoti mō f

$$f=2\left(x+9\right)$$

Ngā Upane Otinga

Whakareatia te 1 ki te 25, ka 25.

$$f-25=2x-7$$

Me tāpiri te 25 ki ngā taha e rua.

$$f=2x-7+25$$

Tāpirihia te -7 ki te 25, ka 18.

$$f=2x+18$$

Whakaoti mō x

$$x=\frac{f-18}{2}$$

Ngā Upane mō te Whakaoti Whārite Rārangi

Whakareatia te 1 ki te 25, ka 25.

$$f-25=2x-7$$

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

$$2x-7=f-25$$

Me tāpiri te 7 ki ngā taha e rua.

$$2x=f-25+7$$

Tāpirihia te -25 ki te 7, ka -18.

$$2x=f-18$$

Whakawehea ngā taha e rua ki te 2.

$$\frac{2x}{2}=\frac{f-18}{2}$$

Mā te whakawehe ki te 2 ka wetekia te whakareanga ki te 2.

$$x=\frac{f-18}{2}$$

Whakawehe f-18 ki te 2.

$$x=\frac{f}{2}-9$$