Whakaoti i te {c}{-A/x=x/2+16}{x+2/7=4}

$$\left. \begin{array} { c } { - \frac { A } { x } = \frac { x } { 2 } + 16 } \\ { \frac { x + 2 } { 7 } = 4 } \end{array} \right.$$

Whakaoti mō A, x

$$x=26$$

$$A=-754$$

Ngā Upane Otinga

Whakaarohia te whārite tuarua. Me whakarea ngā taha e rua ki te 7.

$$x+2=4\times 7$$

Whakareatia te 4 ki te 7, ka 28.

$$x+2=28$$

Tangohia te 2 mai i ngā taha e rua.

$$x=28-2$$

Tangohia te 2 i te 28, ka 26.

$$x=26$$

Whakaarohia te whārite tuatahi. Me kōkuhu ngā uara tāupe mōhiotia ki te whārite.

$$-\frac{A}{26}=\frac{26}{2}+16$$

Me whakarea ngā taha e rua o te whārite ki te 26, arā, te tauraro pātahi he tino iti rawa te kitea o 26,2.

$$-A=13\times 26+416$$

Whakareatia te 13 ki te 26, ka 338.

$$-A=338+416$$

Tāpirihia te 338 ki te 416, ka 754.

$$-A=754$$

Whakawehea ngā taha e rua ki te -1.

$$A=-754$$

Kua oti te pūnaha te whakatau.

$$A=-754 x=26$$