a bag of cant was shared equally among 4 friends. Each friend gave away 7 pieces of candy. They ended up with 8 pieces of candy. Write an equation to find how much candy was in the bag at the beginning.

The answer options given were:
c/4 -7 = 8
4/c - 7 =8
c/4 + 7 = 8
c/7 - 4 = 8