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 = -a - y - 2 for a in terms of y.
| -\(\frac{1}{2}\)y - 3 | |
| \(\frac{1}{4}\)y - \(\frac{3}{4}\) | |
| -\(\frac{11}{16}\)y - \(\frac{1}{4}\) | |
| -\(\frac{3}{8}\)y - \(\frac{1}{4}\) |