Literal Equations: -5c + d = 2c, for c
-5c + d = 2c Subtract d from both sides -5c = 2c - d Subtract 2c from both sides -7c = -d Divide both sides by -7 c = \(\frac{-d}{-7}\) Cancel out the \(\frac{-1}{-1}\) c = \(\frac{d}{7}\)