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