а) (9-2 3/11) + (2+1 9/11)=? б) 28 2/21 -( 14 17/21 + 11 8/21) =?. Created by krivetkabrb. matematika-ru

21) =?...

July 2022 1 14 Report

а) (9-2 3/11) + (2+1 9/11)=?
б) 28 2/21 -( 14 17/21 + 11 8/21) =?

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MadDream ( 9-2 3/11)+(2+1 9/11)=10 6/11
1) 9-2 3/11=6 8/11
2) 2+1 9/11=3 9/11
3) 6 8/11+3 9/11=9 17/11=10 6/11
28 2/21-(14 17/21+11 8/21)=1 19/21
1) 14 17/21+11 8/21=25 25/21=26 4/21
2) 28 2/21-26 4/21=27 23/21-26 4/21=1 19/2

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