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