Whakaoti i te {l}{-15x-6x={(-x+3)}-{(x+2)}+10}{y=9x}{z=y}{text{Solvefor}atext{where}}{a=z}

$$\left. \begin{array} { l } { -15 x - 6 x = {(-x + 3)} - {(x + 2)} + 10 }\\ { y = 9 x }\\ { z = y }\\ { \text{Solve for } a \text{ where} } \\ { a = z } \end{array} \right.$$

Whakaoti mō x, y, z, a

$$a = -\frac{99}{19} = -5\frac{4}{19} \approx -5.210526316$$

Ngā Upane Otinga

Whakaarohia te whārite tuatahi. Pahekotia te -15x me -6x, ka -21x.

$$-21x=-x+3-\left(x+2\right)+10$$

Hei kimi i te tauaro o x+2, kimihia te tauaro o ia taurangi.

$$-21x=-x+3-x-2+10$$

Tangohia te 2 i te 3, ka 1.

$$-21x=-x+1-x+10$$

Tāpirihia te 1 ki te 10, ka 11.

$$-21x=-x+11-x$$

Me tāpiri te x ki ngā taha e rua.

$$-21x+x=11-x$$

Pahekotia te -21x me x, ka -20x.

$$-20x=11-x$$

Me tāpiri te x ki ngā taha e rua.

$$-20x+x=11$$

Pahekotia te -20x me x, ka -19x.

$$-19x=11$$

Whakawehea ngā taha e rua ki te -19.

$$x=-\frac{11}{19}$$

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

$$y=9\left(-\frac{11}{19}\right)$$

Whakareatia te 9 ki te -\frac{11}{19}, ka -\frac{99}{19}.

$$y=-\frac{99}{19}$$

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

$$z=-\frac{99}{19}$$

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

$$a=-\frac{99}{19}$$

Kua oti te pūnaha te whakatau.

$$x=-\frac{11}{19} y=-\frac{99}{19} z=-\frac{99}{19} a=-\frac{99}{19}$$