Question

Ex 2 punctele c si d si ex 3 si 4 va roooooggggggg

Answer 1

2) c) 11-[(-1+3-12)-7]=
11-(-10-7)=
11-(-17)=28
d) -15+[-1+(7-11)-7]=
-15+(-1-4)-7=
-15-5-7=-20-7=-27
3) nr. sunt:-9,-8,-7,-6,-5,-4,-3,-2,-1,0,1,2,3,4,5,6
(-9)+(-8)+(-7)+(-6)+(-5)+(-4)+(-3)+(-2)+(-1)+0+1+2+3+4+5+6=
(-17)+(-13)+(-9)+(-5)+(-1)+3+7+11=
(-30)+(-14)+2+18=
(-44)+20=(-24)