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 2c + 5c = -c + 7z - 7 for c in terms of z.
| 1\(\frac{1}{2}\)z - \(\frac{1}{2}\) | |
| \(\frac{2}{3}\)z - 2\(\frac{1}{3}\) | |
| -2\(\frac{1}{7}\)z - \(\frac{4}{7}\) | |
| 2z - 3\(\frac{1}{2}\) |