dien dau <,>,=. 21-x......24-x
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6 tháng 10 2018
a)12 x ( 367 + 82 ) = 82 x 12 + 12 x 367
b) ( 175 - 26 ) x 17 < 17 x 177 - 17 x 26
a)Vì 12 x ( 367 + 82 ) = 5 388;82 x 12 + 12 x 367 = 5 388
b)Vì ( 175 - 26 ) x 17 = 2 533;17 x 177 - 17 x 26 =2 567
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vì 21<24;x=x nên 21-x <24-x
tick nha