Solve {l}{x=3}{y=1+2x}{z=y}{a=z}{b=a}{text{Solvefor}ctext{where}}{c=b}

$$\left. \begin{array} { l } { x = 3 }\\ { y = 1 + 2 x }\\ { z = y }\\ { a = z }\\ { b = a }\\ { \text{Solve for } c \text{ where} } \\ { c = b } \end{array} \right.$$

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

$$c=7$$

Solution Steps

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

$$y=1+2\times 3$$

Multiply 2 and 3 to get 6.

$$y=1+6$$

Add 1 and 6 to get 7.

$$y=7$$

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

$$z=7$$

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

$$a=7$$

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

$$b=7$$

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

$$c=7$$

The system is now solved.

$$x=3 y=7 z=7 a=7 b=7 c=7$$