第1个回答 2019-06-02
1/4÷（2/3+1/2）×4/5
=1/4×4/5÷（2/3+1/2）
=1/5÷7/6
=6/35
=1/4×4/5÷（2/3+1/2）
=1/5÷7/6
=6/35
第2个回答 2019-06-06
4×2ǚ/5×2/3+1/5÷3/4
=4/5×2/3+1/5×4/3
=4/5×(2/3+1/4
=1/7+1/4×5/4÷7/4
=1/3)
=4/5
1/2+1/4×(5/7+2/7+1)
=1/4×5/7+1/4×2
=1/7+1/
=4/5×2/3+1/5×4/3
=4/5×(2/3+1/4
=1/7+1/4×5/4÷7/4
=1/3)
=4/5
1/2+1/4×(5/7+2/7+1)
=1/4×5/7+1/4×2
=1/7+1/
第3个回答 2020-07-06
4/5×
2/3+
1/5÷
3/4
=4/5×
2/3+
1/5×
4/3
=8/15+4/15
=12/15
1/4×
5/7+
1/4÷7/2+
1/4
=1/4×
5/7+
1/4×2/7+
1/4
=5/28+2/28+1/4
=(5+2+7)/28
=14/28
=1/2
2/3+
1/5÷
3/4
=4/5×
2/3+
1/5×
4/3
=8/15+4/15
=12/15
1/4×
5/7+
1/4÷7/2+
1/4
=1/4×
5/7+
1/4×2/7+
1/4
=5/28+2/28+1/4
=(5+2+7)/28
=14/28
=1/2
第4个回答 2020-06-23
4
=4/3
=4/3+1/3+4/2+
1/4
=1/4×5/7+1/4×2/7+1/4
=1/4×（5/4×
5/7+
1/5
1/5×4/5×2/5×（2/3+1/3）
=4/4÷7/5×1/3
=4/3+
1/5÷
3ǚ/5×
2/7+2/5×2/
=4/3
=4/3+1/3+4/2+
1/4
=1/4×5/7+1/4×2/7+1/4
=1/4×（5/4×
5/7+
1/5
1/5×4/5×2/5×（2/3+1/3）
=4/4÷7/5×1/3
=4/3+
1/5÷
3ǚ/5×
2/7+2/5×2/
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