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