Question

Выполнте действия: 1) 6 8\9 - 3 1\2 + 3 1\12 = 2) 8 7\9 + 6 2\15 - 4,3= 3) ( 19 5\21 - 8 3\14 ) - 6 5\7 = 4) ( 19 - 8 7\8 ) - ( 4 5\6 - 2 8\9 ) =

Answer 1

1) 6 8\9 - 3 1\2 + 3 1\12 = 6 32/36 - 3 18/36 + 3 3/36 = 6 17/36

2) 8 7\9 + 6 2\15 - 4,3= 8 35/45 + 6 6/45 - 4,3 = 14 41/45 - 4 3/10 = 14 82/90 - 4 27/90 = 10 55/90 = 10 11/18

3) ( 19 5\21 - 8 3\14 ) - 6 5\7 = 19 10/42 - 8 9/42 - 6 30/42 = 4 13/42 

4) ( 19 - 8 7\8 ) - ( 4 5\6 - 2 8\9 ) = 10 1/8 - 4 5/6 + 2 8/9 = 10 9/72 - 4 60/72 + 2 64/72 = 8 13/72