Пошаговое объяснение:
(-12 2/5 - (-15 1/3)) + (6 5/6 + (-13 1/2)) =
(-12 2/5 + 15 1/3) + (6 5/6 - 13 1/2) =
(-12 12/30 + 15 10/30) + (6 25/30 - 13 15/30) =
(-12 12/30 + 14 40/30) + (6 25/30 - 12 45/30) =
2 28/30 + (-6 20/30) = 2 28/30 - 6 20/30 =
2 28/30 - 5 50/30 = -3 22/30 = -3 11/15
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Пошаговое объяснение:
(-12 2/5 - (-15 1/3)) + (6 5/6 + (-13 1/2)) =
(-12 2/5 + 15 1/3) + (6 5/6 - 13 1/2) =
(-12 12/30 + 15 10/30) + (6 25/30 - 13 15/30) =
(-12 12/30 + 14 40/30) + (6 25/30 - 12 45/30) =
2 28/30 + (-6 20/30) = 2 28/30 - 6 20/30 =
2 28/30 - 5 50/30 = -3 22/30 = -3 11/15