-(a-b)= -n+(m+n)= (-p-a)-(k-a)= (-4m)-(6,4-m)= (3,2-5)-(3,2+7)= (2,3-1,2)-(1,8+2,3) -5,5-a+(5-m)=
-(a-b)=-a+b -n+(m+n)=-n+m+n=m (-p-a)-(k-a)=-p-a-k+a=-p-k -4m-(6,4-m)=-4m-6,4+m=-3m-6,4 (3,2-5)-(3,2+7)=3,2-5-3,2-7=-12 (2,3-1,2)-(1,8+2,3)=2,3-1,2-1,8-2,3=-3 -5,5-a+5-m=-0,5-a-m