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 + 5b = b - 4x + 9 for b in terms of x.
| -2x + 3 | |
| -\(\frac{7}{15}\)x + \(\frac{8}{15}\) | |
| 1\(\frac{1}{8}\)x - 1\(\frac{1}{8}\) | |
| -x + 2 |