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 -3a + 5a = -4a + 2y + 7 for a in terms of y.
| -3y + 7 | |
| -\(\frac{5}{18}\)y - \(\frac{1}{6}\) | |
| 1\(\frac{2}{5}\)y + 1\(\frac{4}{5}\) | |
| -\(\frac{8}{9}\)y + \(\frac{4}{9}\) |