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 4b - 8b = 5b - 3y + 9 for b in terms of y.
| 5\(\frac{1}{2}\)y + 4\(\frac{1}{2}\) | |
| -5y - 9 | |
| -7y + 6 | |
| y - 1\(\frac{1}{2}\) |