Пошаговое объяснение:
3/8×1/2=3×4/8=12/8=1,5
1/3×2/5=5×6/15=30/15=2
3/5×1/7=21×5/35=105/35=3
3/11×1/4=12×11/44=132/44=3
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Пошаговое объяснение:
3/8×1/2=3×4/8=12/8=1,5
1/3×2/5=5×6/15=30/15=2
3/5×1/7=21×5/35=105/35=3
3/11×1/4=12×11/44=132/44=3