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 - 5c = -2c - z + 7 for c in terms of z.
| -\(\frac{1}{4}\)z - \(\frac{1}{12}\) | |
| -\(\frac{6}{7}\)z - \(\frac{6}{7}\) | |
| \(\frac{1}{2}\)z - 1\(\frac{3}{4}\) | |
| -\(\frac{4}{5}\)z - 1\(\frac{2}{5}\) |