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 8a - 9a = 7a - 2y - 2 for a in terms of y.
| -6y + 2 | |
| -1\(\frac{3}{8}\)y - \(\frac{1}{8}\) | |
| \(\frac{11}{15}\)y + \(\frac{4}{15}\) | |
| 7y - 2 |