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