计算.1.[13/5+2.4×(5/3)-1.5]÷1.1 2.16/7÷8/35+4.375×8/7 3.[33/10-﹙11.9-8.4×4/3﹚]÷130%
问题描述:
计算.1.[13/5+2.4×(5/3)-1.5]÷1.1 2.16/7÷8/35+4.375×8/7 3.[33/10-﹙11.9-8.4×4/3﹚]÷130%
答
[13/5+2.4×(5/3)-1.5]÷1.1
=[13/5+4-1.5]÷1.1
=[2.6+4-1.5]÷1.1
=5.1÷1.1
=51/11
16/7÷8/35+4.375×8/7
=16/7×35/8+35/8×8/7
=10+5
=15
[33/10-﹙11.9-8.4×4/3﹚]÷130%
=[3.3-11.9+11.2]÷1.3
=2.6÷1.3
=2