Whakaoti i te {l}{4x-12+3=3x-27}{y=3x-27}{z=y}{text{Solvefor}atext{where}}{a=z}

$$\left. \begin{array} { l } { 4 x - 12 + 3 = 3 x - 27 }\\ { y = 3 x - 27 }\\ { z = y }\\ { \text{Solve for } a \text{ where} } \\ { a = z } \end{array} \right.$$

Whakaoti mō x, y, z, a

$$a=-81$$

Ngā Upane Otinga

Whakaarohia te whārite tuatahi. Tāpirihia te -12 ki te 3, ka -9.

$$4x-9=3x-27$$

Tangohia te 3x mai i ngā taha e rua.

$$4x-9-3x=-27$$

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

$$x-9=-27$$

Me tāpiri te 9 ki ngā taha e rua.

$$x=-27+9$$

Tāpirihia te -27 ki te 9, ka -18.

$$x=-18$$

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

$$y=3\left(-18\right)-27$$

Whakareatia te 3 ki te -18, ka -54.

$$y=-54-27$$

Tangohia te 27 i te -54, ka -81.

$$y=-81$$

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

$$z=-81$$

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

$$a=-81$$

Kua oti te pūnaha te whakatau.

$$x=-18 y=-81 z=-81 a=-81$$