Whakaoti i te {l}{3x+7=2}{y=5+3x}{z=y}{text{Solvefor}atext{where}}{a=z}

$$\left. \begin{array} { l } { 3 x + 7 = 2 }\\ { y = 5 + 3 x }\\ { z = y }\\ { \text{Solve for } a \text{ where} } \\ { a = z } \end{array} \right.$$

Whakaoti mō x, y, z, a

$$a=0$$

Ngā Upane Otinga

Whakaarohia te whārite tuatahi. Tangohia te 7 mai i ngā taha e rua.

$$3x=2-7$$

Tangohia te 7 i te 2, ka -5.

$$3x=-5$$

Whakawehea ngā taha e rua ki te 3.

$$x=-\frac{5}{3}$$

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

$$y=5+3\left(-\frac{5}{3}\right)$$

Whakareatia te 3 ki te -\frac{5}{3}, ka -5.

$$y=5-5$$

Tangohia te 5 i te 5, ka 0.

$$y=0$$

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

$$z=0$$

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

$$a=0$$

Kua oti te pūnaha te whakatau.

$$x=-\frac{5}{3} y=0 z=0 a=0$$