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