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 = b - 4y + 9 for b in terms of y.
| 4y + 1 | |
| -4y + 2 | |
| \(\frac{1}{7}\)y + \(\frac{5}{14}\) | |
| 1\(\frac{4}{5}\)y - 1\(\frac{4}{5}\) |