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