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 -7c + 6c = 8c + 9z + 8 for c in terms of z.
| -\(\frac{1}{5}\)z - \(\frac{8}{15}\) | |
| -3\(\frac{1}{2}\)z - 2\(\frac{1}{2}\) | |
| \(\frac{11}{14}\)z + \(\frac{4}{7}\) | |
| -2\(\frac{1}{2}\)z + 2 |