2\5 х = 20\49
Х=20\49 : 2\5
Х=10*1
--------=10\9= 1(целая)1\2
9*1
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2\5 х = 20\49
Х=20\49 : 2\5
Х=10*1
--------=10\9= 1(целая)1\2
9*1