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Leon Moa
Giới thiệu về bản thân
Éo đùa với đứa nào đấy!
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2022-08-27 15:14:35
a) 29+132+237+868+763
= 29 + (132+ 868) + (237 + 763)
= 29 + 1000 + 1000
= 29 000 000
b) 652+418-152+572
= (652-152) + (418+572)
= 500 + 1000
= 1500