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 + 5c = -5c + 7z + 6 for c in terms of z.
| 2z + 6 | |
| 1\(\frac{2}{13}\)z - \(\frac{8}{13}\) | |
| -\(\frac{7}{8}\)z - \(\frac{3}{8}\) | |
| z - \(\frac{4}{7}\) |