1)8,75+(-13,25)=-(13,25-8,75)=-4,5;
2)(-3,49)+4,48=4,48-3,49=0,99;
3)(-39,57)+31,8=-(39,57-31,8)=-7,77;
4)79,35+(-82,6)=-(82,6-79,35)=-3,25;
1)8,75+(-13,25)=-(13,25-8,75)=-4,5;
2)(-3,49)+4,48=4,48-3,49=0,99;
3)(-39,57)+31,8=-(39,57-31,8)=-7,77;
4)79,35+(-82,6)=-(82,6-79,35)=-3,25;