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