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 + 7a = 7a - 4x - 4 for a in terms of x.
| 2x - 4 | |
| 3\(\frac{1}{3}\)x + \(\frac{1}{3}\) | |
| 11x + 4 | |
| -\(\frac{8}{15}\)x - \(\frac{8}{15}\) |