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 7b - 7b = 8b - 7x - 8 for b in terms of x.
| x + 8 | |
| -\(\frac{8}{13}\)x + \(\frac{5}{13}\) | |
| -4x + \(\frac{2}{3}\) | |
| -\(\frac{3}{13}\)x - \(\frac{2}{13}\) |