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