Solve {l}{E=13*{(20-9)}}{F=18*0}{a=9-8*0}{b=a}{text{Solvefor}ctext{where}}{c=b}

$$\left. \begin{array} { l } { E = 13 \cdot {(20 - 9)} }\\ { F = 18 \cdot 0 }\\ { a = 9 - 8 \cdot 0 }\\ { b = a }\\ { \text{Solve for } c \text{ where} } \\ { c = b } \end{array} \right.$$

Solve for E, F, a, b, c

$$c=9$$

Solution Steps

Consider the first equation. Subtract 9 from 20 to get 11.

$$E=13\times 11$$

Multiply 13 and 11 to get 143.

$$E=143$$

Consider the second equation. Multiply 18 and 0 to get 0.

$$F=0$$

Consider the third equation. Multiply 8 and 0 to get 0.

$$a=9-0$$

Subtract 0 from 9 to get 9.

$$a=9$$

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

$$b=9$$

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

$$c=9$$

The system is now solved.

$$E=143 F=0 a=9 b=9 c=9$$