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