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( 5/7 + 5/7 + 5/7 ) : 5/7 - 111/500 : ( - 1/5 + 1/50 + 1/500 )

Răspuns :

Capsunica35
(5/7+5/7+5/7):5/7-111/500:(-1/5+1/50+1/500)=
15/7*7/5-111/500:(-100/500+10/500+1/500)=
3-111/500:(-89/500)=
3-111/500*500/89
3-111/89=267/89-111/89=156/89=1,752

daca este +1/5 in loc de-1/5  , atunci
3-111/500*500/111=3-1=2

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