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 -9a + 2a = 7a + 5x + 8 for a in terms of x.
| \(\frac{2}{3}\)x - \(\frac{7}{12}\) | |
| -\(\frac{3}{16}\)x - \(\frac{1}{2}\) | |
| 1\(\frac{2}{5}\)x - 1\(\frac{1}{5}\) | |
| -1\(\frac{6}{7}\)x - \(\frac{2}{7}\) |