Question

Literal Equations: -5c + d = 2c, for c

Answer 1

-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 = $\frac{d}{7}$