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