Bài 1
1/(-37)+14+26+37 2/(-24)+6+10+24 3/15+23+(-25) +(-23) 4/60+33+(-50)+(-33)
=[(-37)+37]+(14+26) =[(-24)+24]+6+10 =[(-25)+15]+[23+(-23)] =[33+(-33)]+[60+(-50)
=0+40 =0+6+10 =-10+0 =0+10
=40 =16 =-10 =10
5/(-16)+(-209)+(-14)+209 6/(-12)+(-13)+36+(-11) 7/-16+34+16-34 8/25+37-48-25-37
=[(-16)+(-14)]+[(-209)+209] =[(-12)+(-13)+(-11)]+36 =(-16+16)+(-34+34) =(-25+25)+(-37+37)-48
=-30+0 =-36+36 =0+0 =0+0-48
=-30 =0 =0 =-48
9/2575+37-2576-29 10/34+35+36+37-14-15-16
=(-2576+2575)+(37-29) =(-14+34)+(-15+35)+(-16+36)+37
=-1+6 =20+20+20+37
=5 =97
Bài 2
1/-7264+(1543+7264) 2/(144-97)-144 3/-145-(18-145) 4/111+(-11+27) 5/(27+514)-(486-73)
=-7264+1543+7264 =144-97-144 =-145-18+145 =111+(-11)+27 =27+514-486+73
=(-7264+7264)+1543 =(144-144)-97 =(-145+145)-18 =[111+(-11)]+27 =541-559
=0+1543 =0-97 =0-18 =100+27 =-18
=1543 =-97 =-18 =127
6/(36+79)+(145-79-36) 7/10-[12-(-9-1)]
=36+79+145-79-36 =10-[12+9+1]
=(-36+36)+(-79+79)+145 =10-22
=0+0+145 =-12
=145