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 + 7c = -9c - 5z + 9 for c in terms of z.
| -2\(\frac{1}{2}\)z - 2 | |
| -\(\frac{12}{13}\)z + \(\frac{9}{13}\) | |
| \(\frac{6}{7}\)z - 1 | |
| -4\(\frac{1}{2}\)z + 4\(\frac{1}{2}\) |