Ответ:1 1/2-1 1/30=

1 15/30-1 1/30=14/30

1 24/25-1/5=

1 24/25-5/25=

1 19/25

1/3-(+2/3)=1/3-2/3=-1/3

-2/5-(-3/5)=-2/5+3/5=1/5.

-2/5+-(3/5)=-2/5-3/5=-6

-3/7-(+4/7)=-3,7-4,7=-8,4

5/8–(-7/8)=5/8+7/8=13,6

-1/9-(2/9)=-1/9-2/9=-3/9

1/3+2/3=3/3=1

-2/5+3/5=1/5

-3/7+4/7=1/7

5/8+(-7/8)=5/8-7/8=-2/8=1/4

-1/9+2/9=1/9

1/9-(-2/9)=1/9+2/9=3/9=1/3

3/7-(+4/7)=3/7-4/7=-1/7

0,7-1,4=-0,7

2/5-(-3/5)=2/5+3,5=6

2/5-(+3/5)=2/5-3/5=-1/5

Пошаговое объяснение: