a) (5674-97) - 5674

= (5674-5674)-97

= 0-97

= -97

b) (-1075) - (29-1075)

= -1075 - 29 + 1075

= (-1075+1075) - 29

= 0 - 29

= -29

a, \(\left(5674-97\right)-5674\)

\(=\left(5674-5674\right)-97\)

\(=0-97=-97\)

b,\(\left(-1075\right)-\left(29-1075\right)\)

=\(-1075-29+1075\)

\(=\left(-1075+1075\right)-29\)

\(=0-29=-29\)

a) ( 5674 - 97 ) - 5674

= 5674 - 97 - 5674

= 5674 - 5674 - 97

= -97

b) ( - 1075) - ( 29 - 1075)

= - 1075 - 29 + 1075

= - 1075 + 1075 - 29

= 0 - 29

= 29

a) ( 5674 - 97 ) - 5674

= ( 5674 - 5674 ) - 97

= 0 - 97

= -97

a) \(\left(5674-97\right)-5674\)

\(=5674-97-5674\)

\(=\left(5674-5674\right)-97\)

\(=0-97\)

\(=-97\)

b) \(\left(-1075\right)-\left(29-1075\right)\)

\(=\left(-1075\right)-29+1075\)

\(=\left[\left(-1075\right)+1075\right]-29\)

\(=0-29\)

\(=-29\)

a) \(\left(5674-97\right)-5674=5674-97-5674=\left(5674-5674\right)-97=-97\)

b) \(\left(-1075\right)-\left(29-1075\right)=-1075-29+1075=\left(-1075+1075\right)-29=-29\)

a,\(\left(5674-97\right)-5674=5674-97-5674=\left(5674-5674\right)-97=-97\)

b,\(-1075-\left(29-1075\right)=-1075-29+-1075=\left(-1075+1075\right)-29=-29\)c

\(\left(13-135+49\right)-\left(13+49\right)=13-135+49-13-49=-135\)

Nếu thấy mình làm đúng thì tick nha bạn,cảm ơn.

a, (-8)-(-12-8)=(-8)+12+8= [(-8)+8}]+12= 0+12=12

b, 1765-(312+1765)= 1765-312-1765=(1765-1765)-312=0-312=-312

c. (31-12)-(46+31-12)= 31-12+46-31+12= (31-31)+(12-12)+46=0+0+46=46

d, (5674-97)-5674=5674-97-5674=(5674-5674)-97=0-97=-97

e, (-1075)-(29-1075)=(-1075)+29+1075=[(-1075)+1075]+29=0+29=29

g, (18+29)+(158-18-29)=18+29+158-18-29=(18-18)+(29-29)+158=0+0+158=158

h, (13-135+49)-(13+49)=13-135+49-13-49=(13-13)+(49-49)-135=0+0-149=0-149=-149

(-1075) – (29 – 1075) = (-1075) – 29 + 1075

= (-1075 + 1075) – 29 = 0 -29 = -29

1a: 16

1. Tính tổng

a) ( - 24 ) + 6 + 10 +24

= [ ( -24 ) + 24 ] + ( 6 + 10)

= 0 + 16

= 16

b) 15 + 23 + ( - 25 ) + ( - 23 )

= (15 + 25 ) + [23 + ( -23 ) ]

= 40 + 0

= 40

c) ( - 3 ) + ( - 350 ) + ( - 7 ) + 350

= [ ( -3 ) + ( -7 ) ] + [ ( -350 ) + 350 ]

= -10 + 0

= -10

d)  ( - 9 ) + ( - 11 ) + 21 + ( - 1 )

= [ (-9) + (-1) ] + [ (-11) + 21 ]

= -10 + 10

= 0

2. Đơn giản biểu thức 

a) x + 25 + ( - 17 ) + 63

= x + ( 25 - 17 + 63 )

= x + 71

b)  ( - 75 ) - ( p + 20 ) + 95

= -75 - p - 20 + 95

= ( -75 - 20 + 95 ) - p

= 0 - p

= -p

3. Tính nhanh các tổng sau

a) ( 5674 - 97 ) - 5674

= 5674 - 94 - 5674

= ( 5674 - 5674 ) -94

= 0 - 94

= -94

b) (- 1075 ) - ( 29 - 1075 )

=-1075 - 29 + 1075

= ( -1075 + 1075 ) - 29

= 0 - 29

= -29

4. Bỏ dấu ngoặc rồi tính 

a )  ( 18 + 29 ) + ( 158 - 18 - 29 )

= 18 + 29 + 158 - 18 - 29

= ( 18 - 18 ) + ( 29 - 29 ) + 158

= 0 + 0 + 158

= 158

b )   ( 13 - 135 + 49 ) - ( 13 + 49 )

= 13 - 135 + 49 - 13 - 49

= ( 13 - 13 ) + ( 49 - 49 ) - 135

= 0 + 0 - 135

= -135

a)(-24)+6+10+24

=0+6+10

=16

b)15+23+(-25)+(-23)

=0+0

=0

c)(-3)+(-350)+(-7)+350

=0+(-3)+(-7)

=0

a. x+25+(-17)+63

= x+8+63

= x+71

b.-75-(P+20)+95

= -75-p-20+95

= -p-75+75

= -p

bài 3 :a.(5674-97)-5674

= (5674-5674)-97

=-97

b.(-1057)-(29-1057)

= (-1057+1057)-29

= -29

1,

\(a,\left(-24\right)+6+10+24=\left[\left(-24\right)+24\right]+6+10=0+16=16\\ b,15+23+\left(-25\right)+\left(-23\right)=-25+15+\left[23+\left(-23\right)\right]=-10+0=-10\\ c,\left(-3\right)+\left(-350\right)+\left(-7\right)+350=\left[\left(-3\right)+\left(-7\right)\right]+\left[\left(-350\right)+350\right]=-10+0=-10\\ d,\left(-9\right)+\left(-11\right)+21+\left(-1\right)=\left[\left(-9\right)+\left(-11\right)+\left(-1\right)\right]+21=\left(-21\right)+21=0\)

2,

\(a,x-25+\left(-17\right)+63=x-42+63=x+21\\ b,\left(-75\right)-\left(p+20\right)+95=-p-20+\left(-75\right)+95=-p+0=-p\)

3,

\(a,\left(5674-97\right)-5674=5674-97-5674=0-97=-97\\ b,\left(-1075\right)-\left(29-1075\right)=\left(-1075\right)-29+1075=0-29=-29\)

1. Tính tổng

a, -24+ 6+ 10+ 24= -24+ 24+ 6+ 10= 6+ 10= 16

b, 15+ 23+ (-25)+ (-23)= (-23+ 23)+ (-25+ 15)= -10

c, -3+ (-350)+ (-7)+ 350= (-350+ 350)+ (-3)+ (-7)= -10

d, -9+ (-11)+ 21+ (-1)= -9+ (-11)+ (-1)+ 21= -21+ 21= 0

2. Đơn giản biểu thức

a, x- 25+ (-17)+ 63

= x- 8+ 63

= x- 71

b, -75-( p+ 20)+ 95

= -75- p- 20+ 95

= (-75+ 95-20)-p

= 0- p= -p

3.

a, (5674- 97)- 5674= (5674- 5674)- 97= 0- 97= -97

b, -1075- (29- 1075)= -1075- 29+ 1075= -1075+ 1075- 29= 0- 29= -29

Bài 89: Tính tổng :

a) (-24) + 6 + 10 + 24 = 16

b) 15 +23+( -25) +(-23) = -10

c) (-3) + ( -350 ) + (-7) + 350 = -10

d) ( -9 ) + ( -11 ) + 21 + ( -1) = 0

Bài 90: Đơn giản biểu thức:

a) x + 25 + ( -17 ) + 63 = x + 71

b) ( -75) – (p + 20 ) + 95 = -p

Bài 91: Tính nhanh các tổng sau:

a) (5674 – 97) – 5674 = 5674 - 97 - 5674 = -97

b) (-1075 ) – ( 29 – 1075 ) = -1075 - 29 + 1075 = -29

Bài 92: Bỏ dấu ngoặc rồi tính:

a) (18 +29 ) + ( 158 – 18 – 29 ) = 18 + 29 + 158 - 18 - 29 = 158

b) ( 13 – 135 + 49 ) – ( 13 +49) = 13 - 135 + 49 - 13 - 49 = - 135

Bài 92 ; a . (18+29)+(158-18-29) b . (13-135+49)-(13+49) = 18+29+158-18-29 = 13- 135+ 49 -13-49 = (-18+18)+(-29+29)+158 = (-13-13) + 49)-135 = 0 + 0 +158 = 0 + 0 -135 = 158 = -135