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