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 = c - 8z + 1 for c in terms of z.
| 15z + 5 | |
| 1\(\frac{1}{2}\)z + 4 | |
| -\(\frac{1}{8}\)z - \(\frac{1}{8}\) | |
| z + \(\frac{2}{5}\) |