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