When solving an equation with two variables, replace the variables with the values given and then solve the now variable-free equation. (Remember order of operations, PEMDAS, Parentheses, Exponents, Multiplication/Division, Addition/Subtraction.)
Solve -9a - 8a = -7a - 5x - 8 for a in terms of x.
| -1\(\frac{2}{5}\)x + 1\(\frac{1}{5}\) | |
| -1\(\frac{1}{2}\)x + 4 | |
| \(\frac{1}{2}\)x - 1\(\frac{1}{6}\) | |
| x + \(\frac{1}{2}\) |