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