Whakaoti i te {l}{7{(x-1)}=4}{y=5x-1}{z=y}{a=z}{text{Solvefor}btext{where}}{b=a}

$$\left. \begin{array} { l } { 7 {(x - 1)} = 4 }\\ { y = 5 x - 1 }\\ { z = y }\\ { a = z }\\ { \text{Solve for } b \text{ where} } \\ { b = a } \end{array} \right.$$

Whakaoti mō x, y, z, a, b

$$b = \frac{48}{7} = 6\frac{6}{7} \approx 6.857142857$$

Ngā Upane Otinga

Whakaarohia te whārite tuatahi. Whakawehea ngā taha e rua ki te 7.

$$x-1=\frac{4}{7}$$

Me tāpiri te 1 ki ngā taha e rua.

$$x=\frac{4}{7}+1$$

Tāpirihia te \frac{4}{7} ki te 1, ka \frac{11}{7}.

$$x=\frac{11}{7}$$

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

$$y=5\times \frac{11}{7}-1$$

Whakareatia te 5 ki te \frac{11}{7}, ka \frac{55}{7}.

$$y=\frac{55}{7}-1$$

Tangohia te 1 i te \frac{55}{7}, ka \frac{48}{7}.

$$y=\frac{48}{7}$$

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

$$z=\frac{48}{7}$$

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

$$a=\frac{48}{7}$$

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

$$b=\frac{48}{7}$$

Kua oti te pūnaha te whakatau.

$$x=\frac{11}{7} y=\frac{48}{7} z=\frac{48}{7} a=\frac{48}{7} b=\frac{48}{7}$$