Whakaoti i te {l}{c-2n+2y=200}{n-y=400}{y=150}

$$\left\{ \begin{array}{l}{ c - 2 n + 2 y = 200 }\\{ n - y = 400 }\\{ y = 150 }\end{array} \right.$$

Whakaoti mō c, n, y

$$y=150$$

$$c=1000$$

$$n=550$$

Ngā Upane Otinga

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

$$n-150=400$$

Me tāpiri te 150 ki ngā taha e rua.

$$n=400+150$$

Tāpirihia te 400 ki te 150, ka 550.

$$n=550$$

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

$$c-2\times 550+2\times 150=200$$

Mahia ngā whakarea.

$$c-1100+300=200$$

Tāpirihia te -1100 ki te 300, ka -800.

$$c-800=200$$

Me tāpiri te 800 ki ngā taha e rua.

$$c=200+800$$

Tāpirihia te 200 ki te 800, ka 1000.

$$c=1000$$

Kua oti te pūnaha te whakatau.

$$c=1000 n=550 y=150$$