小学数学题目求解答讨厌死数学了!计算下面各题： 5/14÷20/21×3/4 [2-(1/2-1/3]×6/5= ==
小学数学题目求解答
讨厌死数学了!
计算下面各题：
5/14÷20/21×3/4 [2-(1/2-1/3]×6/5
= =
= =
= =
5/6÷3/4+1/6÷3/4 4/5÷[(3/4-1/2)×4/5]
= =
= =
= =
（2/3+1/4)÷3/8 4/5÷（1/5+4/15）
= =
= =
= =
（5/8+5/12）×4/15
=
=
=
求高人快点回答!能简便就简便,快快快!
讨厌死数学了!
计算下面各题：
5/14÷20/21×3/4 [2-(1/2-1/3]×6/5
= =
= =
= =
5/6÷3/4+1/6÷3/4 4/5÷[(3/4-1/2)×4/5]
= =
= =
= =
（2/3+1/4)÷3/8 4/5÷（1/5+4/15）
= =
= =
= =
（5/8+5/12）×4/15
=
=
=
求高人快点回答!能简便就简便,快快快!
赞 qingdd 幼苗
共回答了20个问题采纳率：80% 举报
5/14÷20/21× 3/4 [2-(1/2-1/3]×6/5
= 5/14×21/20×3/4 ＝[2-(3/6-2/6]×6/5
= 1／2×3／4×3／4 ＝11／6×6／5
＝9／32 ＝11／5
5/6÷3/4+1/6÷3/4 4/5÷[(3/4-1/2)×4/5]
= （5／6＋1／6）×4／3 =4／5÷（1／4×4/5）
=4／3 =4／5×5 =
＝4
（2/3+1/4)÷3/8 4/5÷（1/5+4/15）
= 11／12×8／3 =4/5×15／7
= 22／9 =12／7
（5/8+5/12）×4/15
=25／24×4/15
=5／18
= 5/14×21/20×3/4 ＝[2-(3/6-2/6]×6/5
= 1／2×3／4×3／4 ＝11／6×6／5
＝9／32 ＝11／5
5/6÷3/4+1/6÷3/4 4/5÷[(3/4-1/2)×4/5]
= （5／6＋1／6）×4／3 =4／5÷（1／4×4/5）
=4／3 =4／5×5 =
＝4
（2/3+1/4)÷3/8 4/5÷（1/5+4/15）
= 11／12×8／3 =4/5×15／7
= 22／9 =12／7
（5/8+5/12）×4/15
=25／24×4/15
=5／18
1年前
9
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