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 -5a - 9a = -7a - 8x + 8 for a in terms of x.
| \(\frac{1}{2}\)x + 4 | |
| -1\(\frac{2}{3}\)x - \(\frac{1}{3}\) | |
| -1\(\frac{5}{6}\)x - \(\frac{2}{3}\) | |
| \(\frac{5}{13}\)x - \(\frac{7}{13}\) |