Whakaoti i te {l}{7x+5=3x-11}{y=x}{z=y}{text{Solvefor}atext{where}}{a=z}

$$\left. \begin{array} { l } { 7 x + 5 = 3 x - 11 }\\ { y = x }\\ { z = y }\\ { \text{Solve for } a \text{ where} } \\ { a = z } \end{array} \right.$$

Whakaoti mō x, y, z, a

$$a=-4$$

Ngā Upane Otinga

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

$$7x+5-3x=-11$$

Pahekotia te 7x me -3x, ka 4x.

$$4x+5=-11$$

Tangohia te 5 mai i ngā taha e rua.

$$4x=-11-5$$

Tangohia te 5 i te -11, ka -16.

$$4x=-16$$

Whakawehea ngā taha e rua ki te 4.

$$x=\frac{-16}{4}$$

Whakawehea te -16 ki te 4, kia riro ko -4.

$$x=-4$$

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

$$y=-4$$

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

$$z=-4$$

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

$$a=-4$$

Kua oti te pūnaha te whakatau.

$$x=-4 y=-4 z=-4 a=-4$$