展开全部
1/2+3/8+5/12 通分后,公分母是24
=12/24+9/24+10/24
=(12+9+10)/24
=31/24
=12/24+9/24+10/24
=(12+9+10)/24
=31/24
展开全部
1/2+3/8+5/12
= 1/2+5/12+3/8
= 6/12+5/12+3/8
= 11/12 + 3/8
= 22/24 + 9/24
= 31/24
= 1/2+5/12+3/8
= 6/12+5/12+3/8
= 11/12 + 3/8
= 22/24 + 9/24
= 31/24
展开全部
1/2+3/8+5/12
=12/24+9/24+10/24
=21/24+10/24
=31/24
=12/24+9/24+10/24
=21/24+10/24
=31/24
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