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 - 7c = 6c - 5z - 3 for c in terms of z.
| 2z - 1 | |
| -z - 7 | |
| -\(\frac{2}{7}\)z + \(\frac{3}{7}\) | |
| \(\frac{4}{5}\)z + \(\frac{3}{5}\) |