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