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 -6c - 5c = -7c - 4z + 9 for c in terms of z.
| 8z + 6 | |
| z - 3 | |
| z + 9 | |
| -5\(\frac{1}{2}\)z + 2 |