-6+8= -4-2= 9+(-8)= 4-7= -8+2= 10+(-12)= -9-3= -15+18= -14+6= 21+(-11)= -6+14= -17-13= -12+3= 26+(-29)= -7+10= 27+(-13)= -9+4= -15-5= 11-23= -12+18=
-6+8=2 -4-2=-6 9+(-8)=1 4-7=-3 -8+2=-6 10+(-12)=-2 -9-3=-12 -15+18=3 -14+6=-8 21+(-11)=10 -6+14=8 -17-13=-30 -12+3=-9 26+(-29)=-3 -7+10=3 27+(-13)=14 -9+4=-5 -15-5=-20 11-23=-12 -12+18=6