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 + 4b = -b - 7x + 9 for b in terms of x.
| -\(\frac{7}{8}\)x - \(\frac{1}{4}\) | |
| 5\(\frac{1}{2}\)x - 4\(\frac{1}{2}\) | |
| 4\(\frac{1}{2}\)x - 3 | |
| \(\frac{1}{8}\)x - \(\frac{1}{4}\) |