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 - 5b = 7b - 4x + 9 for b in terms of x.
| -\(\frac{2}{5}\)x + 1\(\frac{3}{5}\) | |
| \(\frac{1}{4}\)x + \(\frac{7}{8}\) | |
| -\(\frac{1}{4}\)x - 2\(\frac{1}{4}\) | |
| -2\(\frac{5}{6}\)x - 1\(\frac{1}{6}\) |