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 -9a + 5a = 7a - 6y - 8 for a in terms of y.
| -13y + 9 | |
| -\(\frac{4}{11}\)y - \(\frac{3}{11}\) | |
| \(\frac{11}{16}\)y + \(\frac{1}{2}\) | |
| -10y - 7 |