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 8c + c = -c - 9z + 4 for c in terms of z.
| -1\(\frac{1}{3}\)z - \(\frac{4}{9}\) | |
| \(\frac{1}{5}\)z - \(\frac{4}{5}\) | |
| -1\(\frac{1}{9}\)z + \(\frac{4}{9}\) | |
| -\(\frac{7}{11}\)z + \(\frac{8}{11}\) |