= -2003+2057

= 54

(-2003)+(-21+75+2003)

=(-2003)+(-21)+75+2003

=[(-2003)+2003]+[(-21)+75]

=0+54

=54

-2003 + (-21 + 75 + 2003)

= -2003 + 75 - 21 + 2003

= (2003 - 2003) + (75 - 21)

=  0 + 54

= 54

mik đang bị âm rât nhiều

= - 2003+(-21+75+2003)

=2003+75-21+2003

=(2003-2003)+(75-21)

=0+54

=54

k cho mk cái nha mấy bạn

cu thay si sai cai do

=-1949

sao lại bảo mình sai ? :(

1 - 2 + 3 - 4 + ... + 99

= 1 + (-2 + 3) + (-4 + 5) + ... + (-98 + 99)

= 1 + 1 + 1 + ... + 1

= 1.50

= 50

(-2003) + (-21 + 75 + 2003)

= -2003 - 21 + 75 + 2003

= (-2003 + 2003) + (-21 + 75)

= 0 + 54

= 54

\(-2003+\left(-21+75+2003\right)\\ =-2003-21+75+2003\\ =\left(-2003+2003\right)+\left(75-21\right)\\ =0+54\\ =54\)

\(1125-\left(374+1125\right)+\left(-65+374\right)\\ =1125-374-1125-65+374\\ =\left(1125-1125\right)+\left(-374+374\right)-65\\ =0+0-65\\ =0-65\\ =-65\)

chắc chết quá bạn ơi❔

a) 2003 + ( - 21 + 75 + 2003 )

= 2003 + 2057

= 4060 

b) 1152 - ( 374 + 1152 ) + ( - 65 + 374 )

= 1152 - 374 - 1152 + (- 65) + 374 

= 1152 - 1152 - 374 + 374 + ( - 65 )

= 0 - 0 + ( - 65 )

= (-65)

a)-2003+(-21)+75+2003=(-2003+2003)+(-21)+75=0+(-21)+75=54

b)1152-374-1152+(-65)+374=(1152-1152)+(-374+374)+(-65)=0+0+(-65)=-65

L i k e bạn nha

a) -2003+(-21+75+2003)=(-2003+2003)+(75-21)=0+54=54

b)1152-(374+1152)+(-65+374)=1125-374-1152-65+374=(1125-1125)+(-374+374)+65=65

a) - 2003 + ( -21 + 75 + 2003 )

= - ( 2003 - 2003 ) - ( 21 - 75 )

= 0 - ( -54 )

= 54

b) 1152 - ( 374  + 1152 ) + ( -65 + 374 )

= 1152 - 374 - 1152 - 65 + 374

= ( 1152 - 1152 ) - ( 574 - 374 ) - 65

= 0 - 0 - 65

= -65

a ) -2003 + (-21 + 75 + 2003)

= -2003 - 21  + 75 + 2003

= (-2003 + 2003) + (75 - 21)

= 0 + 54 = 54

b) 1152 - (374 + 1152) + (-65 + 374)

= 1152 - 374 - 1152 - 65 + 374

= (1152 - 1152) - (374 - 374) - 65

= 0 - 0 - 65 = -65