a) 35- {12 - [(-14)+(-2)] }
=35 - [12-(-14-2)]
=35-[12-16]
=35-(-4)
=35+4
=39
b) 49 - (- 54) - 23
=49 + 54 - 23
= 80

c) |31 - 17 | - |13 - 52|
= |14| - | -39|
=14-39
= -25
d) -|-5|+ (-19) + 18 +|11-4| - 57
=-5 - 19 + 18 + 7 - 57
= -5-1-50
=-56
e) 126 + (-20) + |124| - (- 320) - |- 150|
= 126 - 20 + 124 + 320 - 150
= 400

g) (- 17) + 5 +8 +17 + (-3)
=(-17+17)+(5+8-3)=10

h) [( -15) + ( - 21 )] - ( 25 -15 - 35- 21)
=-15-21-25+15+35+21
=(-15+15)+(21-21)+(35+15-25)
=25

b, 49 - ( -54) - 23

= 49 + 54 - 23

= 103 - 23

= 80

c, | 31 - 17 | - | 13 - 52|

= | 14 | - | -39 |

= 14 - 39

= -25

m )\(-\left|-5\right|+\left(-19\right)+18+\left|11-4\right|-57\)

\(=-5-19+18+7-57\)

\(=-56\)

n ) \(126+\left(-20\right)+\left|124\right|-\left(-320\right)-\left|-150\right|\)

\(=126-20+124+320-150\)

\(=400\)

m)

n)

=400

Chúc bạn học tốt

\(m) -|-5|+(-19)+18+|11-4|-57\)

\(=(-5)+(-19)+18+7-57\)

\(=(-24)+18+(-50)\)

\(=(-56)\)

\(n) 126+(-20)+|124|-(-320)-|-150|\)

\(=126+(-20)+124+320+150\)

\(=(126+124+150)+(320+-20)\)

\(=400+300\)

\(=700\)

a: =35/17-18/17-9/5+4/5

=1-1=0

b: =-7/19(3/17+8/11-1)

=7/19*18/187=126/3553

c: =26/15-11/15-17/3-6/13

=1-6/13-17/3

=7/13-17/3=-200/39

????????????????

Pokemon,Nguyễn Đình Dũng lúc nào cũng nói dễ thế?

\(126+\left(-20\right)+|124|-\left(-320\right)-|-150|\)

\(=126-20+124+320-150\)

\(=\left(126+124\right)+\left(320-20\right)-150\)

\(=250-150+300=100+300=400\)

\(126+\left(-20\right)+|124|-\left(-320\right)-|-150|\)

=126-20+124+320-150

=(126+124)+(320-150-20)

=250+150

=400