20);...

October 2021 1 10 Report

5целых5/9+3целых1/6-6целых4/27; 1целых5/7+3целых11/14-2целых 1/4; 12целых13/48-(9целых17/32-4целых5/2); (18целых-10целых 18/35)-(3 целых 9/28+2 целых 3/20);

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ndusha

Verified answer

5 5/9+3 1/6-6 4/27=5+3-6+5/9+1/6-4/27=2+ 10/18+3/18-4/27=2+ 13/18-4/27=
=2+ 13/18-4/27=2+39/54-8/54=2+31/54=2 31/54

1 5/7+3 11/14-2 1/4=1+3-2+5/7+11/14-1/4=2+10/14+11/14-1/4=2+21/14-1/4=
=2+3/2-1/4=2+6/4-1/4=2+5/4=2+1 1/4=3 1/4

12 13/48-(9 17/32-4 5/2)= 12 13/48-(9 17/32-6 1/2)= 12 13/48-(9 17/32-6 16/32)=
=12 13/48-3 1/32=12-3+13/48-1/32=9+ 26/96-3/96=9+23/96=9 23/96

(18-10 18/35)-(3 9/28+2 3/20)=(8- 18/35)-(3 45/140+2 21/140)=7 17/35- 5 66/140=
=7 17/35- 5 33/70=7 34/70- 5 33/70=1 1/70

2 votes Thanks 4

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