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 -6a - 3a = -7a - 6y - 8 for a in terms of y.
| -3y - 8 | |
| 7y - 4 | |
| \(\frac{1}{2}\)y - 1 | |
| \(\frac{9}{10}\)y - \(\frac{4}{5}\) |