Whakaoti i te {l}{3-3y=-4}{z=-2y}{text{Solvefor}atext{where}}{a=z}

$$\left. \begin{array} { l } { 3 - 3 y = -4 }\\ { z = -2 y }\\ { \text{Solve for } a \text{ where} } \\ { a = z } \end{array} \right.$$

Whakaoti mō y, z, a

$$a = -\frac{14}{3} = -4\frac{2}{3} \approx -4.666666667$$

Ngā Upane Otinga

Whakaarohia te whārite tuatahi. Tangohia te 3 mai i ngā taha e rua.

$$-3y=-4-3$$

Tangohia te 3 i te -4, ka -7.

$$-3y=-7$$

Whakawehea ngā taha e rua ki te -3.

$$y=\frac{-7}{-3}$$

Ka taea te hautanga \frac{-7}{-3} te whakamāmā ki te \frac{7}{3} mā te tango tahi i te tohu tōraro i te taurunga me te tauraro.

$$y=\frac{7}{3}$$

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

$$z=-2\times \frac{7}{3}$$

Whakareatia te -2 ki te \frac{7}{3}, ka -\frac{14}{3}.

$$z=-\frac{14}{3}$$

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

$$a=-\frac{14}{3}$$

Kua oti te pūnaha te whakatau.

$$y=\frac{7}{3} z=-\frac{14}{3} a=-\frac{14}{3}$$