1)2 2/3×1/5=8/3×1/5=8/15
2) 8/15×3/4=2/5
3) 2/5×10=4
ответ 4
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1)2 2/3×1/5=8/3×1/5=8/15
2) 8/15×3/4=2/5
3) 2/5×10=4
ответ 4