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 - 9c = 6c - 8z - 3 for c in terms of z.
| 5\(\frac{1}{2}\)z - \(\frac{1}{2}\) | |
| z - 6 | |
| -\(\frac{1}{13}\)z + \(\frac{3}{13}\) | |
| \(\frac{1}{8}\)z - \(\frac{3}{8}\) |