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