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