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 2a + 9a = -3a - 8x + 7 for a in terms of x.
| -3\(\frac{2}{5}\)x + 1\(\frac{2}{5}\) | |
| -x + \(\frac{6}{13}\) | |
| -\(\frac{4}{9}\)x - \(\frac{1}{2}\) | |
| -\(\frac{1}{4}\)x + \(\frac{7}{8}\) |