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 + 9b = 5b + 9x + 9 for b in terms of x.
| -14x + 4 | |
| x + 1 | |
| x - 9 | |
| -\(\frac{9}{13}\)x - \(\frac{6}{13}\) |