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](/uploads/image/z/131090-50-0.jpg?t=%E8%AE%A1%E7%AE%97%E4%B8%8B%E9%9D%A2%E5%90%84%E9%A2%98%2C%E8%83%BD%E7%AE%80%E7%AE%97%E7%9A%84%E7%AE%80%E7%AE%97%EF%BC%887%2F5%2B49%EF%BC%89%2A1%2F49+45%2A16%2F9%2B20%2F9%2F1%2F4515.6-2%E5%8F%882%2F7-4%E5%8F%885%2F7+7%2F12%2B%EF%BC%883%2F4-1%2F3%EF%BC%89%2F1%2F36)
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