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 + 8a = 3a - 7y - 2 for a in terms of y.
| -\(\frac{8}{9}\)y - 1 | |
| -2y - 2 | |
| -\(\frac{1}{2}\)y - \(\frac{4}{5}\) | |
| 1\(\frac{1}{2}\)y + \(\frac{1}{5}\) |