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