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