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