Question

выполните вычитание: -2/5-(-3/5), -3/7-(+4/7), -1/9-(+2/9)

Answer 1

-2,5-(-3,5)=1 -3,7-(+4,7)=-8,4 -1,9-(+2,9)[email protected],8

Answer 2

-2/5-(-3/5)=-2/5+3/5=1/5=2/10=0,2;
 -3/7-(+4/7)= -3/7-4/7=-7/7=-1;
-1/9-(+2/9)=-1/9-2/9=-3/9=-1/3;