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 10b - b = 9b - 9x + 7 for b in terms of x.
| x - 2 | |
| -\(\frac{3}{7}\)x + \(\frac{3}{7}\) | |
| -8x + 7 | |
| \(\frac{3}{5}\)x + \(\frac{4}{5}\) |