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 -4a - 5a = -5a + 7y + 5 for a in terms of y.
| 12y + 5 | |
| -\(\frac{1}{4}\)y - 1\(\frac{1}{2}\) | |
| 3y - \(\frac{1}{3}\) | |
| y + 1 |