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