计算下面各题,能简算的简算(7/5+49)*1/49 45*16/9+20/9/1/4515.6-2又2/7-4又5/7 7/12+(3/4-1/3)/1/36

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计算下面各题,能简算的简算(7/5+49)*1/49 45*16/9+20/9/1/4515.6-2又2/7-4又5/7 7/12+(3/4-1/3)/1/36

计算下面各题,能简算的简算(7/5+49)*1/49 45*16/9+20/9/1/4515.6-2又2/7-4又5/7 7/12+(3/4-1/3)/1/36
计算下面各题,能简算的简算
(7/5+49)*1/49 45*16/9+20/9/1/45
15.6-2又2/7-4又5/7 7/12+(3/4-1/3)/1/36

计算下面各题,能简算的简算(7/5+49)*1/49 45*16/9+20/9/1/4515.6-2又2/7-4又5/7 7/12+(3/4-1/3)/1/36
(7/5+49)*1/49
=7/5*1/49+49*1/49
=1/35+1
=1又1/35
45*16/9+20/9/1/45
=45*16/9+20/9*45
=45*(16/9+20/9)
=45*4
=180
15.6-2又2/7-4又5/7
=15.6-(2又2/7+4又5/7)
=15.6-7
=8.6
7/12+(3/4-1/3)/1/36
=7/12+(3/4-1/3)*36
=7/12+(3/4*36-1/3*36)
=7/12+(27-12)
=25又7/12