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

Răspuns :

Alitta
... = 3* (5/7) : 5/7 - 111/500 : (- 100+10+1) / 500 =
    = 3 - 111/500:89/500 =
    = 3 - 111/500 * 500/89 =
    = 3 - 111/89 =
    = (89*3 - 111) / 89 =156 / 89
 (5/7+5/7+5/7):5/7-111/500:(-1/5+1/50+1/500)=


3* (5/7) : 5/7 - 111/500 : (- 100+10+1) / 500 =
3 - 111/500:89/500 =
 3 - 111/500 * 500/89 =
  3 - 111/89 = 
   (89*3 - 111) / 89 =156 / 89

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