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 2a - 4a = 4a + 7x + 8 for a in terms of x.
| 6x + 7 | |
| \(\frac{1}{4}\)x + \(\frac{3}{4}\) | |
| -1\(\frac{1}{8}\)x - \(\frac{5}{8}\) | |
| -5\(\frac{1}{2}\)x - 4 |