Ответ:
Пошаговое объяснение:
1 . 1) ( - 4/15 + 7/12 ) : ( - 38/45 ) = - 3/8 .
1 ] - 4/15 + 7/12 = 19/60
2 ] 19/60 : (- 38/45 ) = - 19/60 * 45/38 = - 3/8
2) ( 11/16 - ( - 17/24) ) : ( - 5 7/12 ) = - 1/4 .
1 ] 11/16 - ( - 17/24 ) = 11/16 + 17/24 = 67/48 = 1 19/48
2] 1 19/48 : (- 5 7/12) = - 67/48 : 67/12 = - 67/48 * 12/67 = - 1/4
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Ответ:
Пошаговое объяснение:
1 . 1) ( - 4/15 + 7/12 ) : ( - 38/45 ) = - 3/8 .
1 ] - 4/15 + 7/12 = 19/60
2 ] 19/60 : (- 38/45 ) = - 19/60 * 45/38 = - 3/8
2) ( 11/16 - ( - 17/24) ) : ( - 5 7/12 ) = - 1/4 .
1 ] 11/16 - ( - 17/24 ) = 11/16 + 17/24 = 67/48 = 1 19/48
2] 1 19/48 : (- 5 7/12) = - 67/48 : 67/12 = - 67/48 * 12/67 = - 1/4