Problem: Leah had 32 chocolates and her sister had 42. If they ate 35, how many pieces do they have left in total?
Solution: Leah had 32 chocolates and Leah’s sister had 42. That means there were originally 32 + 42 = 74 chocolates. 35 have been eaten. So in total they still have 74 - 35 = 39 chocolates.
Equation: 32 + 42 = 74. 74 - 35 = 39.
Answer: 39