tong cua hai so luc sau la
79,85 + 15,4 -20 =75,25
DS:75,25
Tổng lúc sau là :
79,85 +15,4 - 20 = 75,25
Câu này mình làm trên Violympic Toán cấp huyện rồi
tổng hai số lúc sau là:79,85+15,4-20=75,25
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