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x-1/5 - 2(x-1)/3 >0
x- 2x+1/3 >1/5 /*3
x-2x+1>3/5
-x>3/5-1
-x>-2/5 /*(-1)
x>2/5
Tak więc może to być liczba 1/5 lub 1/10 ;)