Ответ: 1/6
решение:
-1/3-1/6+2 1/2-1 5/6=-1/3-(1/6+1 5/6)+ 2 1/2=-1/3 -2+2 1/2=(2 1/2 -2)-1/3=1/2-1/3=3/6-2/6=1/6
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Ответ: 1/6
решение:
-1/3-1/6+2 1/2-1 5/6=-1/3-(1/6+1 5/6)+ 2 1/2=-1/3 -2+2 1/2=(2 1/2 -2)-1/3=1/2-1/3=3/6-2/6=1/6