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