Ответ:
Пошаговое объяснение:
-2 5/14+(-3 5/7)+2 11/21 = - 3 23/42
1) - 2 5/14 - 3 5/7 = - 33/14 - 26/7 = -33/14 - 52/14= -85/14
2) - 85/14 + 2 11/21 = -85/14 + 53/21 = - 255/42 + 106/42 = -149/42 = - 3 23/42
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Ответ:
Пошаговое объяснение:
-2 5/14+(-3 5/7)+2 11/21 = - 3 23/42
1) - 2 5/14 - 3 5/7 = - 33/14 - 26/7 = -33/14 - 52/14= -85/14
2) - 85/14 + 2 11/21 = -85/14 + 53/21 = - 255/42 + 106/42 = -149/42 = - 3 23/42