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