Пошаговое объяснение:
53/7+(-21/3)-(-3 7/15)=
7 4/7+(-7)+3 7/15=
2/7+3 7/15=
3 (60-49)/105=
3 11/105
53/7 + (-21/3) - (3 7/15) = 7 4/7 - 7 - 3 7/15 =
4/7 - 3 7/15 = 60/105 - 3 49/105 =
60/105 - 2 154/105 = -2 94/105
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Пошаговое объяснение:
53/7+(-21/3)-(-3 7/15)=
7 4/7+(-7)+3 7/15=
2/7+3 7/15=
3 (60-49)/105=
3 11/105
Пошаговое объяснение:
53/7 + (-21/3) - (3 7/15) = 7 4/7 - 7 - 3 7/15 =
4/7 - 3 7/15 = 60/105 - 3 49/105 =
60/105 - 2 154/105 = -2 94/105