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 3a + 2a = a - y + 1 for a in terms of y.
| -2y - \(\frac{1}{6}\) | |
| \(\frac{1}{18}\)y + \(\frac{1}{9}\) | |
| \(\frac{1}{2}\)y - \(\frac{3}{5}\) | |
| -1\(\frac{1}{2}\)y + \(\frac{1}{2}\) |