Whakaoti i te x(x-1)-x(x-3)=12

$$x(x-1)-x(x-3)=12$$

Whakaoti mō x

$$x=6$$

Ngā Upane mō te Whakaoti Whārite Rārangi

Whakamahia te āhuatanga tohatoha hei whakarea te x ki te x-1.

$$x^{2}-x-x\left(x-3\right)=12$$

Whakamahia te āhuatanga tohatoha hei whakarea te x ki te x-3.

$$x^{2}-x-\left(x^{2}-3x\right)=12$$

Hei kimi i te tauaro o x^{2}-3x, kimihia te tauaro o ia taurangi.

$$x^{2}-x-x^{2}-\left(-3x\right)=12$$

Ko te tauaro o -3x ko 3x.

$$x^{2}-x-x^{2}+3x=12$$

Pahekotia te x^{2} me -x^{2}, ka 0.

$$-x+3x=12$$

Pahekotia te -x me 3x, ka 2x.

$$2x=12$$

Whakawehea ngā taha e rua ki te 2.

$$x=\frac{12}{2}$$

Whakawehea te 12 ki te 2, kia riro ko 6.

$$x=6$$