Пошаговое объяснение:
-2/7×(-3):14=2/7×3:14=6/7:14=6/7×1/14=
=3/7×1/7=3/49
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Пошаговое объяснение:
-2/7×(-3):14=2/7×3:14=6/7:14=6/7×1/14=
=3/7×1/7=3/49