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