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 7c + 9c = -7c - 5z - 1 for c in terms of z.
| 14z - 5 | |
| \(\frac{5}{14}\)z - \(\frac{1}{7}\) | |
| -z - \(\frac{1}{14}\) | |
| 1\(\frac{3}{4}\)z + \(\frac{1}{2}\) |