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 c - c = -c - z - 1 for c in terms of z.
| -z + 7 | |
| -\(\frac{5}{8}\)z + \(\frac{9}{16}\) | |
| z - 6 | |
| z - \(\frac{1}{2}\) |