Номер 1196 заранее спс

Question

Номер 1196 заранее спс

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Answer 1

(1(2/7)+3(5/7))+(2(5/6)+1(1/6))=5+4=9
((4/9)+2(5/9))+(1(2/3))+(1/3))=3+2=5
(2(1/5)+1(4/5))+((3/8)+(5/8))=4+1=5
(1(3/10)+2(7/10))+((1/4)+(3/4))=4+1=5