Ответ:
1)-2,5*(-3,2)=2,5*3,2=8
2)3,075/(-2,5)=-3075/2500=-123/100=-1 23/100=-1,23
3)-5 1/6*1 2/31=-31/6*33/31=-1023/186=-11/2=-5 1/2=-5,5
4)-4/19:7/38=-4/19*38/7=-152/153=-8/7=-1 1/7
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Ответ:
1)-2,5*(-3,2)=2,5*3,2=8
2)3,075/(-2,5)=-3075/2500=-123/100=-1 23/100=-1,23
3)-5 1/6*1 2/31=-31/6*33/31=-1023/186=-11/2=-5 1/2=-5,5
4)-4/19:7/38=-4/19*38/7=-152/153=-8/7=-1 1/7