Ответы и объяснения

2013-09-15T14:41:35+04:00
1) (2-(-2/3))/2=(2+2/3)/2=(8/3)/2=4/3=1целая1/3
2) (2-(-2/3))/(-2/3)=(8/3)/(-2/3)=-4
3) 2/(2+(-2/3))=2/(4/3)=1целая1/2=1,5
4) (-2/3)/(2-(-2/3))=(-2/3)/(8/3)=1/4=0,25