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