a)(-37) + 14 + 26 + 37
= [(-37)+37]+(14+26)
=0+40=40
b)-24+6+10+25
=(-24+24)+(6+10)
=0+16=16

(-37) + 14 + 26 + 37
={ (-37) + 37 }+ 14 + 26
=0+30
=30

(-37) + 14 + 26 + 37
={ (-37) + 37 }+ 14 + 26
=0+40
=40

c) 15+23+(-25)+(-23)
=[15+(-25)+[23+(-23)]
=-10+0=-10
d)60+33+(-50)+(-33)
=[60+(-50)]+[33+(-33)]
=10+0=10

e) (-16)+(-209)+(-14)+209
=[(-16)+(-14)]+[(-209)+209]
=-20+0=-20
g) (-12)+(-13)+36+(-11)
=(-25)+(-11)+36
=-36+36=0

1) (-37) + 14 + 26 + (-37)
=((-37)+(37))+14+26
=0+14+26
=40
2) -24+6+10+24
=(-24+24)+6+10
=0+6+10
=16
3)15+23+-25+-23
=(23+-23)+(15+-25)
=0+-10
=-10
4)60+33+-50+-33
=60+-50+33+-33
=-10+0
=-10
5)-16+-209+-14+209
=-16+-14+-209+209
=-30+0
=-30

(-37)+14+26+37
=[(-37)+37] +(14+26)
=0+40
=40

h)300-(-200)-(-120)+18
=300+200+120+18
=500+120+18
=620+18
=638
i) -(-299)+(-219)-401+12
=299-219-401+12
=80-401+12
=-321+12=-309

4)60+33+-50+-33
=(60+-50)+33+-33
=10+0
=10

5)-16+-209+-14+209
=(-16+-14)+-(209+209)
=-30+0
=-30

(-24)+6+10+21
=(24-24}+(6+10)
=0+16=16

k) 555-(-333) -100-80
=555+333-180
=888-180
=708
l) 34+35+36+37-14-15-16-17
=(34-14)+(35-15)+(36-16)+(37-17)
=20+20+20+20
=80

m)1+(-2)+3+(-4)+.....+19+(-20)
=[1+(-2)].[(20-1);1+1]:2=-1.10=-10
n) 1-2+3-4+...+99-100
=(1-2).[(100-1):1+1]:2=-1.50=-50
Nếu đúng cho mik 5 sao nha !!!

(-37) + 14 + 26 + 37
= [(-37)+37]+(14+26)
=0+40=40
b)-24+6+10+25
=(-24+24)+(6+10)
=0+16=16

E)(-16)+(-209)+(-14)+209
=[(-16)+(-14)]+[(-209)+209]
=-20+0= -20
G) (-12)+(-13)+36+(-11)
=(-25)+(-11)+36
=-36+36= 0

C)15+23+-25+-23
=(23+-23)+(15+-25)
=0+-10
=-10
D)60+33+-50+-33
=60+-50+33+-33
=-10+0
=-10

Cho mk hỏi câu này lm sao
|-x|< 5

thực hiện phép tính
a.(144-97)-144
b.178-(206+178)+(206-50)
c.53-(-7)-53-49

25+37-48-25-37=
2575+37-2576-29=
34+35+36+37-14-15-16-17=

(-37)+14+26+37
=(-37)+37+14+26
=0+40
=40
:)