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