Ответ:
Пошаговое объяснение:
В - 1 .
1) 7 1/7 + 3 2/7 = 10 3/7 ;
2) 8 5/13 - 6 = 2 5/13 ;
3) 5 - 3 2/7 = 4 7/7 - 3 2/7 = 1 5/7 ;
4) 2 5/12 + 3 - 1 19/30 = 5 5/12 - 1 19/30 = 4 85/60 - 1 38/60 = 3 47/60 ;
5) ( x + 2 3/13 ) - 1 7/26 = 4 5/39 ;
x + 2 3/13 = 4 5/39 + 1 7/26 ;
x + 2 3/13 = 5 31/78 ;
x = 5 31/78 - 2 3/13 ;
x = 3 13/78 = 3 1/6 .
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Answers & Comments
Ответ:
Пошаговое объяснение:
В - 1 .
1) 7 1/7 + 3 2/7 = 10 3/7 ;
2) 8 5/13 - 6 = 2 5/13 ;
3) 5 - 3 2/7 = 4 7/7 - 3 2/7 = 1 5/7 ;
4) 2 5/12 + 3 - 1 19/30 = 5 5/12 - 1 19/30 = 4 85/60 - 1 38/60 = 3 47/60 ;
5) ( x + 2 3/13 ) - 1 7/26 = 4 5/39 ;
x + 2 3/13 = 4 5/39 + 1 7/26 ;
x + 2 3/13 = 5 31/78 ;
x = 5 31/78 - 2 3/13 ;
x = 3 13/78 = 3 1/6 .