Solve {l}{x=6}{p=3}{y=x+3}{z=7p}{a=y}{b=z}{text{Solvefor}c,dtext{where}}{c=a}{d=b}

$$\left. \begin{array} { l } { x = 6 }\\ { p = 3 }\\ { y = x + 3 }\\ { z = 7 p }\\ { a = y }\\ { b = z }\\ { \text{Solve for } c,d \text{ where} } \\ { c = a }\\ { d = b } \end{array} \right.$$

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

$$c=9$$

$$d=21$$

Solution Steps

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

$$y=6+3$$

Add 6 and 3 to get 9.

$$y=9$$

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

$$z=7\times 3$$

Multiply 7 and 3 to get 21.

$$z=21$$

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

$$a=9$$

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

$$b=21$$

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

$$c=9$$

Consider the equation (8). Insert the known values of variables into the equation.

$$d=21$$

The system is now solved.

$$x=6 p=3 y=9 z=21 a=9 b=21 c=9 d=21$$