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