Question

помогите по математики номер 623

Answer 1

1)-1
2)-1
3)-1
4)-1


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Answer 2

сек

Answer 3

5/6-1/3=1/2 1/3-5/6=-1/2

Answer 4

1/2-2/3=-1/6. 2/3-1/2=1/6

Answer 5

1,7-2=-0,3. 2-1,7=0,3

Answer 6

0,9-3=-2,1. 3-0,9=2,1