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 2c + 3c = -9c + 9z + 7 for c in terms of z.
| -\(\frac{5}{9}\)z - 1 | |
| 2\(\frac{1}{2}\)z - \(\frac{1}{4}\) | |
| -\(\frac{3}{17}\)z - \(\frac{9}{17}\) | |
| \(\frac{6}{11}\)z + \(\frac{7}{11}\) |