Whakaoti i te 400=2x8(b+15)

$$400 = 2 x 8 ( b + 15 )$$

Whakaoti mō b

$$b=-15+\frac{200}{x_{8}}$$

$$x_{8}\neq 0$$

Ngā Upane mō te Whakaoti Whārite Rārangi

Whakamahia te āhuatanga tohatoha hei whakarea te 2x_{8} ki te b+15.

$$400=2x_{8}b+30x_{8}$$

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

$$2x_{8}b+30x_{8}=400$$

Tangohia te 30x_{8} mai i ngā taha e rua.

$$2x_{8}b=400-30x_{8}$$

Whakawehea ngā taha e rua ki te 2x_{8}.

$$\frac{2x_{8}b}{2x_{8}}=\frac{400-30x_{8}}{2x_{8}}$$

Mā te whakawehe ki te 2x_{8} ka wetekia te whakareanga ki te 2x_{8}.

$$b=\frac{400-30x_{8}}{2x_{8}}$$

Whakawehe 400-30x_{8} ki te 2x_{8}.

$$b=-15+\frac{200}{x_{8}}$$

Whakaoti mō x_8

$$x_{8}=\frac{200}{b+15}$$

$$b\neq -15$$

Ngā Upane mō te Whakaoti Whārite Rārangi

Whakamahia te āhuatanga tohatoha hei whakarea te 2x_{8} ki te b+15.

$$400=2x_{8}b+30x_{8}$$

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

$$2x_{8}b+30x_{8}=400$$

Pahekotia ngā kīanga tau katoa e whai ana i te x_{8}.

$$\left(2b+30\right)x_{8}=400$$

Whakawehea ngā taha e rua ki te 2b+30.

$$\frac{\left(2b+30\right)x_{8}}{2b+30}=\frac{400}{2b+30}$$

Mā te whakawehe ki te 2b+30 ka wetekia te whakareanga ki te 2b+30.

$$x_{8}=\frac{400}{2b+30}$$

Whakawehe 400 ki te 2b+30.

$$x_{8}=\frac{200}{b+15}$$