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