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