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 - 4a = -9a - 7x - 1 for a in terms of x.
| -\(\frac{7}{13}\)x + \(\frac{6}{13}\) | |
| -\(\frac{3}{4}\)x - \(\frac{1}{4}\) | |
| 2x - 7 | |
| -\(\frac{1}{3}\)x + \(\frac{5}{12}\) |