Stacy has 32 berries. Steve takes 4 of Stacy's berries, and still has 7 less berries than Stacy started with. How many berries did Steve start with? Let's answer step by step:
Let x be the number of berries Steve started with. x + 4 = 32 - 7. x + 4 = 25. x = 21 berries. The answer: 21.