9 7/10+5,92-3 9/20=9 7/10+5 92/100-33 9/20=12 17/100
2. 15 62/100-3 9/20=(15-3)+(62/100-45/100)=12 17/100
41,7- 8 3/5+2 1/4=41 7/10-8 3/5+2 1/4=35 7/20
1. 41 7/10-8 3/5=(41-8)+(7/10-6/10)=33 1/10
2. 33 1/10+2 1/4=(33+2)+(2/20+5/20=35 7/20
9 7/10+5,92-3 9/20=9 7/10+5 92/100-33 9/20=12 17/100
9 7/10+5 92/100=(9+5)+(70/100+92/100)=14 162/100=15 62/1002. 15 62/100-3 9/20=(15-3)+(62/100-45/100)=12 17/100
41,7- 8 3/5+2 1/4=41 7/10-8 3/5+2 1/4=35 7/20
1. 41 7/10-8 3/5=(41-8)+(7/10-6/10)=33 1/10
2. 33 1/10+2 1/4=(33+2)+(2/20+5/20=35 7/20