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