a) 5/9 x 12/25 = 4/15

b) 12/11 : 36/55 = 5/3

c) 9/55 x 22 = 18/5

d) 144/7 : 36 = 4/7

a) 5/9 x 12/25 = 4/15

b) 12/11 : 36/55 = 5/3

c) 9/55 x 22 = 18/5

d) 144/7 : 36 = 4/7

a) 5/9 x 12/25 = 4/15

b) 12/11 : 36/55 = 5/3

c) 9/55 x 22 = 18/5

d) 144/7 : 36 = 4/7

5/9 x 12/25 = 4/15

12/11 : 36/ 55 = 5/3

9/55 x 22 = 18/5 

144/7 : 36 = 4/7

4 phần 15

5 phần 3

18 phần 5

4 phần 7

\(\frac{5}{9}x\frac{12}{25}=\frac{4}{15}\)

\(\frac{12}{11}:\frac{36}{55}=\frac{5}{3}\)

\(\frac{9}{55}x22=\frac{18}{5}\)

\(\frac{144}{7}:36=\frac{4}{7}\)

60/225

660/396

198/55

144/252 

k nha bn

a)4/33

b)5/3

c)18/5

d)4/7

\(\frac{5}{9}x\frac{12}{25}=\frac{4}{15}\)

\(\frac{9}{55}x22=\frac{18}{5}\)

\(\frac{12}{11}:\frac{36}{55}=\frac{5}{3}\)

\(\frac{114}{7}:36=\frac{19}{42}\)

- 4/15

- 35/33

-198/55

-144/252

like nha!!

1; - 7264 + (1543 + 7264)

= - 7264 + 1543 + 7264

= (-7264 + 7264) + 1543

= 0 + 1543

= 1543

2; (14497) - 144

= 14497 - 144

= 14353

3; (-145).(18145)

= -145.18145

= -2631025

4; 111 + (-11 + 27)

= 111 + 16

= 127

5; (27 + 514) - (486 - 73)

= 27 + 514 - 486 + 73

= (27 + 73) + (514 - 486)

= 30 + 28

= 58

6; (36 + 79) + (145 - 79 -  36)

= 36 + 79 + 145 - 79 - 36

= (36 - 36) + (79 - 79) + 145

= 0 + 0 + 145

= 145

tui ko rảnh mà gõ cái trên nhưng có chơi free fire

bạn rank j rồi

tui chs, rank vàng( mùa trc k cương)

Bài 1

1/ (-37) +14 +26 + 37

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

= 40

2/ (-24) + 6 + 10 + 24

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

= 16

3/ 15 + 23 + (-25) + (-23)

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

= -10

4/ 60 + 33 + (-50) + (-33)

= [33 + (-33)] + 60 + (-50)

= 10

5/ (-16) + (-209) + (-14) + 209

= [(-209) + 209] + (-16) + (-14)

= -30

6/ (-12) + (-13) + 36 + (-11)

= (-25) + 25 = 0

7/ (-16) + 24 + 16 - 34

= [(-16) + 16] + (24 - 34)

= -10

8/ 25 + 37 - 48 - 25 - 37

= (25 - 25) + (37 - 37) - 48

= -48

9/ 2575 + 37 - 2576 - 29

= (2575 - 2576) + (37 - 29)

= -1 + 8 = 7

10/ 34 + 35 + 36 + 37 -14 -15- 16 - 17

= (37 - 17) + (36 - 16) + (35 - 15) + (34 - 14)

= 10 + 10 + 10 + 10 = 40

Bài 2

1/ -7264 + (1543 + 7264)

= -7264 + 1543 + 7264

= 1543

2/ (144 - 97) - 144

= 144 - 97 - 144

= - 97

3/ (-145) - (18 - 145)

= (-145) - 18 + 145

= - 18

4/ 111 + (-11 + 27)

= 111 - 11 + 27

= 127

5/ ( 27 + 514) - (486 - 73) 

= 27 + 514 - 486 + 73

= (27 + 73) + ( 514 - 486)

= 100 + 28 = 128

6/ (36 + 79) + (145 - 79 - 36)

= 36 + 79 + 145 - 79 - 36

= (36 - 36) + ( 79 - 79) + 145 = 145

7/ 10 - [12 - (- 9 - 1)]

= 10 - [12 - (- 10)]

= 10 - [12 + 10] = 10 - 12 - 10 = - 12

8/ (38 - 29 + 43) - (43 + 38)

= 38 - 29 + 43 - 43 - 38

= (38 - 38) + (43 - 43) - 29 = - 29

9/  271 - [(-43) + 271 - (-17)]

= 271 - [(-43) + 271 + 17]

= 271 + 43 - 271 - 17

= (271 - 271) + 43 - 17 = 26

10/ -144 - [29 - (+ 144) - (+144)]

= - 144 - [29 - 144 - 144]

= -144 - 29 + 144 + 144

= (- 144 + 144) - 29 + 144

= 115

XONG RỒI NHÌN SỐ MUỐN ĐAU MẮT !!!!!!!!!!!!!!!!!!!!!!

1) - 7264 + ( 1543 + 7264 )

= - 7264 + 1543 + 7264 

= ( - 7264 + 7264 ) + 1543

= 0 + 1543 

= 1543

2) ( 144 - 97 ) - 144

= 144 - 97 - 144

= ( 144 - 144 ) - 97

= 0 - 97 

= - 97

3) ( - 145 ) - ( 18 - 145 )

= -145 - 18 + 145

= ( - 145 + 145 ) - 18

= 0 - 18 

=  - 18 

4) 111 + ( - 11 + 27 )

= 111 - 11 + 27

= 100 + 27 

= 127 

các câu còn lại bn tự làm nha

1. -7264+(1543+7264)                                                     

=-7264+1543+7264

=[-7264+7264]+1543

=0

1,-7264+(1543+7264)=-7264+1543+7264=(-7264+7264)+1543=0+1543=1543

2,(144-97)-144=144-97-144=(144-144)-97=0-97=-97

3,(-145)-(18-145)=-145-18+145=(-145+145)-18=0-18=-18

4,111+(-11+27)=111-11+27=100+27=127

5,(27+514)-(486-73)=27+514-486+73=(27+73)+(514-486)=100+28=128

6,(36+79)+(145-79-36)=36+79+145-79-36=(36-36)+(79-79)+145=0+0+145=145

7,10-[12-(-9-1)]=10-[12+9+1]=10-12-9-1=10-10-12=0-12=-12

8,(38-29+43)-(43+38)=38-29+43-43-38=(38-38)+(43-43)-29=0+0-29=-29

9,271-[(-43)+271-(-17)]=271-[-43+271+17]=271+43-271-17=(271-271)+(43-17)=0+26=26

10,-144-[29-(+144)-(+144)]=-144-[29-144-144]=-144-[29-144-144]=-144-29+144+144=(-144+144)+(144-29)=0+115=115

1)-7264+(1543+7264)=-7264+1543+7264=1543

2)(144-97)-144=144-97-144=-97

3)(-145)-(18-145)=-145-18+145=-18

4)111+(-11+27)=111-11+27=100+27=127

5)(27+514)-(486-73)=27+514-486-73=541-486-73=55-73=-18

6)(36+79)+(145-79-36)=36+79+145-79-36=145

7)10-[12-(-9-1)]=10-[12+9+1]=10-12-9-1=-12

8)(38-29+43)-(43+38)=38-29+43-43-38=-29

9)271-[(-43)+271-(-17)]=271-[-43+271+17]=271+43-271-17=43-17=26

10)-144-[29-(+144)-(+144)]=-144-[29-144-144]=-144-29+144+144=-29+144=115

a) (-37)+14+26+37 = ( -37 + 37) + ( 14 + 26) = 40
b) (-24)+6+10+24 = ( - 24 + 24) + ( 6 + 10) = 16
c) 15+23+9-25)+(-33) = (15 - 25) + ( 23 - 33) + 9

= - 10 - 10 + 9

= - 11
d) 60+33+(-50)+(-33) = ( 60 -50) + ( 33 - 33)

= 10
e) (-16)+(-209)+(-14)+209 = ( - 16 - 14) + ( - 209 + 209)

= - 30
g) (-12)+(-13)+36+(-11)= ( - 11 -12 - 13 ) + 36

= - 36 + 36 = 0
h) -16+24+16-34 = ( - 16 + 16)+(24 - 34) = - 10
r) 25+37-48-25-37 = (25 - 25)+(37 - 37) - 48 = - 48
u) 2575+37-2576-29 = ( 2575 - 2576) + ( 37 - 29)

= - 1 + 8 = 7
i) 34+35+36+37-14-15-16-17 = ( 34 - 14 )+(35 - 15)+(36-16)+ (37 - 17)

= 80
2 . Bỏ ngoặc rồi tính
a)-7264+(1543+7264) = - 7264 + 1543 + 7264

= 1543
b) (144-97)-144 = 144 - 97 - 144 = - 97
c) (-145)-(18-145) = - 145 - 18 + 145 = - 18
d) 11+(-11+27) = 11 - 11 + 27 = 27
e) (27+514)-(486-73) = 27 + 514 - 486 + 73

= 128
g) (36+79)+(145-79-66) = 36 + 79 + 145 - 79 - 66

= 115
h) 10-[12-(-9-1) = 10 - ( 12 + 9 + 1)

= 10 - 22

= - 12
r) (-28-29+43)-(43+38) = - 28 - 29 + 43 - 43 - 38

= - 95
u ) 271 - [(-43)+271-(-17)] = 271 + 43 - 271 - 17 = 26
i ) -144-[29-(+144)-(+144) = - 144 - 29 - 144 + 144 = -173

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