а) -2/3-1/6= -4/6-1/6=-5/6
б) -3,8+1/2=-3,8+0,5=-3,3
в)1/3-2/5=5/15-6/15=-1/15
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а) -2/3-1/6= -4/6-1/6=-5/6
б) -3,8+1/2=-3,8+0,5=-3,3
в)1/3-2/5=5/15-6/15=-1/15
-3,8+1/2=-3,8+0,5=-3,3
1/3-2/5=5/15-6/15=-1/15