Пошаговое объяснение:
-3/5+1/4= -12/20+5/20= -7/20
3 1/2+(-4 2/3)= 3 1/2-4 2/3=
=7/2-14/3=21/6-28/6= -7/6= - 1 1/6
-16 4/5+7 5/6=(-16+7)+(-24/30+25/30)=
= -9+1/30= -8 30/30+1/30= -8 29/30
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Пошаговое объяснение:
-3/5+1/4= -12/20+5/20= -7/20
3 1/2+(-4 2/3)= 3 1/2-4 2/3=
=7/2-14/3=21/6-28/6= -7/6= - 1 1/6
-16 4/5+7 5/6=(-16+7)+(-24/30+25/30)=
= -9+1/30= -8 30/30+1/30= -8 29/30