Ответы и объяснения

2014-03-16T15:40:16+00:00
№32
(7/25+7/33):14/33=1  28/175
1)7/25+7/33=231/825+175/825=406/825
2)406/825:14/33=406/825*33/14=13398/11550=6699/5775=203/175=1  28/175
№35
(5/33-8/15)*11/5=-231/275
1)5/33-8/15= 75/495 - 264/495=-189/495=-63/165
2)-63/165*11/5=-693/825=-231/275