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 -2c + 3c = -c - 9z - 9 for c in terms of z.
| 1\(\frac{4}{7}\)z - \(\frac{6}{7}\) | |
| 12z + 9 | |
| \(\frac{4}{7}\)z + \(\frac{3}{7}\) | |
| -8z - 4 |