a, (476-324)-(124+524)

= 476-324-124-524

=476-(324+124+524)

= -496

b, -(127-2013)+(-1013-372)

=-127+2013+(-1013)-372

=(-127-372)+[2013+(-1013)]

=-499+100

=501

a=-496

b=501

h mình nha 

-496

\(\left(476-324\right)-\left(124+524\right)\)

\(=476-324-124-524\)

\(=-496\)

A= ( 476-324) - ( 124+524)

= 152 - 648

= -496

a ) 1 14 b ) 2 4 c ) 0. d ) − 7 129

2012 x 2013 - 1013 x 2013 + 2013

= 2012 x 2013 - 1013 x 2013 + 2013 x 1

= 2013 x ( 2012 - 1013 + 1 )

= 2013 x         1000

=       2013000

a) 2012x2013-1013x2013+2013

=2013(2012-1013+1)

=2013x1000

=2013000

\(2012x2013-1013x2013+2013\)

\(=2013x\left(2012-1013+1\right)\)

\(=2013x1000\)

\(=2013000\)

Nhớ ấn đúng cho mình nha! 

a) -8; -9; -10; ...; 5; 6; 7

b)

1) 700

2) -1201

a) -7 < 0,1,2,3,4,5,6,7<8

b) 

1) 631  + [ 587 - (287+231)]                                

= 631 + [ 587 - 518 ] 

= 631 + 69

=700                                              

2)  (-524) – [(476 + 245) - 45]

= (-524) – 476 – 245 + 45

= (-524) + (– 476) + (– 245) + 45

= (-1000) + (-200)

= -1200.

= 631 + 69                                                   

= 700

a) Tìm các số nguyên x thỏa mãn: \(-7< x< 8.\)

\(x=\left\{-6;-5;-4;-3;-2;-1;0;1;2;3;4;5;6;7\right\}.\)

b)  Tính nhanh các tổng:

1)  \(631+\left[587-\left(287+231\right)\right]=631+587-287-231=\left(631-231\right)+\left(587-287\right)=400+300=700.\)

2)  \(\left(-524\right)-\left[\left(476+246\right)-45\right]=\left(-524-246\right)+\left(-476+45\right)=-1201.\)

b: =67-5759+5759=67

a =-400
b=67
c=8080

\(a,524-\left[\left(476+524\right)-76\right]\)

\(=524-1000+76\)

\(=600-1000\)

\(=-400\)

\(b,\left(67-5759\right)+5759\)

\(=67-5759+5759\)

\(=67\)

\(c,4.\left(2020+2019\right)+4.\left(-2019\right)\)

\(=4.\left(2020+2019-2019\right)\)

\(=4.2020\)

\(=8080\)

a) (128+1276+262+324)x(64-8x8)

=(128+262) + (1276+324)x(64-8x8)

=1600+390=1990

a) = (128+276+262+324) x ( 64 - 64)

= (...) x 0

= 0

b)= ( 8 x 0) x ( ....)

= 0 x (....)

=0

mấy chỗ (....) là viết như đề bài nha!

k mk nha!^^

 a , ( 1276 + 324 + 128 + 262 ) * ( 64 - 64) = ( 1600 + 390) * 0= 1990 * 0 = 0

Bài 1 :

a, 2013 - 79 -1013 - 21

= (2013 -1013 ) + (-79 -21 )

=1000 - 100

=900

b, 135 - 591 -409 +437

= ( 135 + 437 ) +(-591 -409 )

= 572 -1000

= -428

c, -46 - 135 +35 +146

= 100 -100

= 0

a) 2013-79-1013-21

=(2013-1013)-(-79-21)

=1000-100

=900

b) 135-591-409+437

=(135+437)-(-591-409)

= 572-1000

= -428

c) -46-135+35+146

= (-46+146)+(-135+35)

=100+(-100)

=0