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 -9c - 5c = -c - 7z - 9 for c in terms of z.
| 1\(\frac{1}{7}\)z - \(\frac{3}{7}\) | |
| 11z - 9 | |
| \(\frac{1}{4}\)z + 1\(\frac{1}{8}\) | |
| 5z - 9 |