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