Вычеслите -3/7-1/3+3/14+1/6
-3/7-1/3+3/14+1/6=(-3/7+3/14)+(1/6-1/3)=(-6/14+3/14)+(1/6+2/6)=-3/14+3/6=-9/42+21/42=12/42=2/7