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