1целая 1/14 * 2 целые 1/3 1 целая 1/7 : ( - 2) целые 2/7
(1+1/14)*(2+1/3)=(15/14)*(7/3)=(15*7)/(14*3)=5/2=2.5
(1+1/7)/(-2-2/7)=(8/7)/(-16/7)=(8/7)*(-7/16)=(-1/2)=-0.5
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