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 -2a - 2a = -6a - 8y + 9 for a in terms of y.
| -1\(\frac{1}{2}\)y + 2\(\frac{1}{4}\) | |
| -5\(\frac{1}{2}\)y - 2 | |
| 2\(\frac{1}{3}\)y + 1\(\frac{1}{6}\) | |
| -\(\frac{8}{15}\)y + \(\frac{1}{15}\) |