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 -2a - 6a = -7a - 8y - 7 for a in terms of y.
| -\(\frac{2}{5}\)y - 1\(\frac{2}{5}\) | |
| 2\(\frac{1}{2}\)y - \(\frac{1}{4}\) | |
| \(\frac{1}{8}\)y - \(\frac{3}{4}\) | |
| y + 1 |