如题所述
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第1个回答 2019-06-24
解:4/7减1/3等于( 5/21 )
∵已知需求出4/7减1/3等于多少
A - B = C
∴4/7减1/3
= 4/7 - 1/3
= (4×3)/(7×3)- (1×7)/(3×7)
= 12/21 - 7/21
= 5/21
答:4/7减1/3等于5/21本回答被网友采纳
∵已知需求出4/7减1/3等于多少
A - B = C
∴4/7减1/3
= 4/7 - 1/3
= (4×3)/(7×3)- (1×7)/(3×7)
= 12/21 - 7/21
= 5/21
答:4/7减1/3等于5/21本回答被网友采纳
第2个回答 2019-06-24
4/7-1/3
=12/21-7/21
=5/21
=12/21-7/21
=5/21