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 -9b - 9b = 5b + 7x + 9 for b in terms of x.
| -3x + 2\(\frac{1}{2}\) | |
| -\(\frac{12}{13}\)x + \(\frac{1}{13}\) | |
| -1\(\frac{1}{7}\)x - \(\frac{9}{14}\) | |
| 2x - \(\frac{6}{7}\) |