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 + 7b = 9b + 5x + 4 for b in terms of x.
| x - 3 | |
| 2\(\frac{2}{5}\)x + 1 | |
| \(\frac{1}{3}\)x - \(\frac{2}{3}\) | |
| \(\frac{7}{12}\)x - \(\frac{1}{12}\) |