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 4c - 9c = 8c - 6z - 9 for c in terms of z.
| \(\frac{1}{5}\)z - \(\frac{3}{5}\) | |
| \(\frac{1}{18}\)z + \(\frac{1}{9}\) | |
| -\(\frac{3}{4}\)z + 2\(\frac{1}{4}\) | |
| \(\frac{7}{8}\)z + \(\frac{9}{16}\) |