Solve {l}{y*x=20}{x=5}{z=y}{a=z}{b=a}{c=b}{text{Solvefor}dtext{where}}{d=c}

$$\left. \begin{array} { l } { y \cdot x = 20 }\\ { x = 5 }\\ { z = y }\\ { a = z }\\ { b = a }\\ { c = b }\\ { \text{Solve for } d \text{ where} } \\ { d = c } \end{array} \right.$$

Solve for y, x, z, a, b, c, d

$$d=4$$

Solution Steps

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

$$y\times 5=20$$

Divide both sides by 5.

$$y=\frac{20}{5}$$

Divide 20 by 5 to get 4.

$$y=4$$

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

$$z=4$$

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

$$a=4$$

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

$$b=4$$

Consider the equation (6). Insert the known values of variables into the equation.

$$c=4$$

Consider the equation (7). Insert the known values of variables into the equation.

$$d=4$$

The system is now solved.

$$y=4 x=5 z=4 a=4 b=4 c=4 d=4$$