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 -6c - 9c = 4c - 5z + 9 for c in terms of z.
| 1\(\frac{7}{8}\)z + \(\frac{3}{8}\) | |
| -\(\frac{2}{5}\)z - \(\frac{9}{10}\) | |
| \(\frac{1}{4}\)z - \(\frac{1}{4}\) | |
| 1\(\frac{1}{10}\)z + \(\frac{1}{5}\) |