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