第1个回答 2017-07-28
(24分之7—16分之3)÷8分之1
=(24分之7—16分之3)×8
=24分之7×8—16分之3×8
=3分之7—2分之3
=6分之5
第2个回答 2018-06-20
4/7+1/14-1/2
=8/14+1/14-7/14
=2/14
=1/7
5/3-3/8-5/8
=5/3-(3/8+5/8)
=5/3-1
=2/3
3/5+3/11+7/5+11
=(3/5+7/5)+11+3/11
=2+11+2/11
=13又2/11
3/4-{5/6-1/3}
=3/4-(5/6-2/6)
=3/4-1/2
=3/4-2/4
=1/4
第3个回答 2018-01-21
1.3/4*1/9+1/4*1/9
2.5/8*2/7+5/8*5/7
3.101*1/5-1/5*21
4.31*5*6-5/6
5.8*4/5+8*11/5
6.6*(1/2+2/3)
7.(3/5-1*2)*5/3
8.12*(2*3+1/6)
9.4/7*5/9+3/7*5/9
10.(3+1)*5/6
11.5/2*(3/2+4/5)
12.1/6*(2/3+3/4)
13.7/72*(1/8+1/9)
14.9*5/6+5/6
15.12*5/6-5/6*3
第4个回答 2018-08-13
4/7+1/14-1/2
=8/14+1/14-7/14
=2/14
=1/7
5/3-3/8-5/8
=5/3-(3/8+5/8)
=5/3-1
=2/3
3/5+3/11+7/5+11
=(3/5+7/5)+11+3/11
=2+11+2/11
=13又2/11
3/4-{5/6-1/3}
=3/4-(5/6-2/6)
=3/4-1/2
=3/4-2/4
=1/4