递等式计算题5/6-3/4+1/3 11/12-(1/6-1/8) 7/12-(3/4-1/2) 1/2-(3/4-3/8)
您好:
5/6-3/4+1/3
=10/12-9/12+4/12
=5/12
11/12-(1/6-1/8)
=22/24-4/24+3/24
=21/24
=7/8
7/12-(3/4-1/2)
=7/12-1/4
=1/3
1/2-(3/4-3/8)
=1/2-3/8
=1/8
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5/6-3/4+1/3(通分)
=10/12-9/12+4/12
=1/12+4/12
=5/12
11/12-(1/6-1/8)
=11/12-1/6+1/8(通分)
=22/24-4/24+3/24
=18/24+3/24
=21/24(约分)首让
=7/8
7/12-(3/4-1/2)
=7/12-3/4+1/2(通分)
=7/12-9/12+6/12
=13/12-9/12
=4/12
=1/3
1/2-(3/4-3/8)
=1/2-3/4+3/8
=8/16-12/乎哗16+6/16
=14/16-12/16
=2/16
=1/者顷局8
5/6-3/4+1/3
=10/12-9/12+4/12
=(10-9+4)/12
=5/12
11/12-(1/6-1/8)
=11/稿渗颤12-2/12+1/8
=9/12+1/8
=3/4+1/8
=6/8+1/8
=7/8
7/12-(3/4-1/2)
=7/12-(3/4-2/4)
=7/12-1/键败喊码4
=7/12-3/12
=4/12
=1/3
1/2-(3/4-3/8)
=1/2-(6/8-3/8)
=1/2-3/8
=4/8-3/8
=1/8
1、计算题:
解:1/3÷5/6÷16/15
=1/3×6/5×15/16=3/8
[1-(1/5+1/6)]÷1/12 =[1-11/30]×12=19/30×12=38/5
(
5/6-3/4)÷(1/雀蔽皮4-1/8)=1/12÷1/8=并液1/12×8=2/3
应用题:
解:30÷5/6×8/9=36×8/9=32(千克)
答顷差:丙筐梨的质量是32千克.