Solve {l}{u=23}{v={(u+57)}/4}{w=v}{x=w}{text{Solvefor}ytext{where}}{y=x}

$$\left. \begin{array} { l } { u = 23 }\\ { v = {(u + 57)} / 4 }\\ { w = v }\\ { x = w }\\ { \text{Solve for } y \text{ where} } \\ { y = x } \end{array} \right.$$

Solve for u, v, w, x, y

$$y=20$$

Solution Steps

Consider the second equation. Insert the known values of variables into the equation.

$$v=\frac{23+57}{4}$$

Add 23 and 57 to get 80.

$$v=\frac{80}{4}$$

Divide 80 by 4 to get 20.

$$v=20$$

Consider the third equation. Insert the known values of variables into the equation.

$$w=20$$

Consider the fourth equation. Insert the known values of variables into the equation.

$$x=20$$

Consider the fifth equation. Insert the known values of variables into the equation.

$$y=20$$

The system is now solved.

$$u=23 v=20 w=20 x=20 y=20$$