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 + 5a = 3a - 4x + 7 for a in terms of x.
| -1\(\frac{1}{3}\)x - \(\frac{1}{9}\) | |
| -\(\frac{1}{3}\)x + \(\frac{7}{18}\) | |
| 2x - \(\frac{2}{5}\) | |
| -1\(\frac{1}{2}\)x + 1\(\frac{1}{6}\) |