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Đỗ Hoàng Minh Huy
Giới thiệu về bản thân
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2024-12-09 17:39:24
a) 5,3.4,7+(-1,7).5,3-5,9
= 5,3 .(4,7-1,7) -5,9
= 5,3.3 - 5.9
= 15,9 - 5.9
= 10
b) 2/3 + -1/3 + 7/15 = 10/15 + -5/15 + 7/15 = 12/15 = 4/5
2024-12-09 17:39:11
a)38
b)36;40;42
2023-11-06 20:18:12
3653+578-1654
= (3654-1654) + 578
= 2000 + 578
= 2578