能简算就算48/35÷13/19+22/35÷13/19(0.8+1/125)×5/475×9/13/3/4(3/5—2/15)÷(1/12+5/6)
问题描述:
能简算就算
48/35÷13/19+22/35÷13/19
(0.8+1/125)×5/4
75×9/13/3/4
(3/5—2/15)÷(1/12+5/6)
答
1)=(48+22)/35÷13/19=70/35÷13/19=2*19/13=38/13
2)=(0.8+1/125)×5/4=(4/5+1/125)×5/4=4/5×5/4+1/125×5/4=1+1/(25×4)=1+1/100=1+0.01=1.01
3)=75×9/13×4/3=75×4×9/3/13=300×3/13=900/13
4)=(9/15—2/15)÷(1/12+10/12)=(7/15)÷(11/12)=(7/11)×(12×15)=)=(7/11)×(4/5)=28/55
答
=48/35*19/13+22/35*19/13
=(48/35+22/35)*19/13
=19/13*2
=38/13
请采纳,谢谢!
答
48/35÷13/19+22/35÷13/19=48/35*19/13+22/35*19/13=19/35*(48/13+22/13)=19/35*70/13=38/13(0.8+1/125)×5/4=0.8*5/4+5/500=1+0.01=1.0175×9/13/3/4=75*9/13*4/3=900/13(3/5—2/15)÷(1/12+5/6)=7/15/(1...