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 -4c - 7c = 2c - 7z + 1 for c in terms of z.
| -15z - 9 | |
| -\(\frac{7}{13}\)z + \(\frac{6}{13}\) | |
| z - \(\frac{1}{6}\) | |
| 4z + 8 |