\(=\dfrac{99\cdot44.44\cdot2\cdot13.20\cdot4}{3.3\cdot88.88\cdot2\cdot6.6\cdot8\cdot5}=\dfrac{99}{3.3}\cdot\dfrac{1}{2}\cdot2\cdot\dfrac{1}{2}\cdot\dfrac{1}{5}=30\cdot\dfrac{1}{5}=6\)

123 + [ 54 + ( - 123 ) + 46 ]

= 123 + [ - 69 + 46 ]

= 123 + ( - 23 )

= 100 

TK

Bài làm

123 + [ 54 + ( -123 ) + 46 ]

= 123 + [ 54 - 123 + 46 ]

= 123 - 23

= 100

123 + [54 + (-123) + 46]

=123+54+(-123)+46

=[123+(-123)]+(54+46)

=0+100

=100

1+5+3+9+5+7=30

Bằng 30 nha

k Đúng cho mình nhá

30 nhe bn

(-23)+13+(-17)+57

=[(-23)+13]+[(-17)+57]

=(-10)+40

=30

hok tốt

Bạn ưi..

Tính cách nhanh hay tính bth cx ra kq là 30 mak

Chắc do bạn tính sai đó

Bạn kiểm tra lại xem

^^

(-23)+13+(-17)+57

C1: -23+13+(-17)+57

=(-23+13)+(-17+57)

=-10+40

=30

C2: -23+13+(-17)+57

=[-23+(-17)]+(13+57)

=-40+70

=30

^_^

4/1 x 13/15

= 52/15

52/15

mình có câu trl rồi nhé:

4 x 13/15 = 4 x 13/15 = 52/15 nhé!

=4090506-\(\dfrac{3}{2023}\)*2021+2020

=4090506-\(\dfrac{6063}{2023}\)+2020

=\(\dfrac{8279174035}{2023}\) tối giản luôn rồi nhé

TL

12 : 1,25 : 8

= 12 : (1,25 x 8 )

= 12 : 10

=1,2

HT

Học tốt nha bạn^^

12 : 1,25 : 8

= 12 : (1,25 x 8 )

= 12 : 10

=1,2

tích cho tui nhé

=1,2 nhé

III. 

A. 

1. B

2. C

3. B

4. A

5. D

B. 

1. C

2. B

3. B

4. A

5. C

1 b c b a d

2 c b b a c nha

1 The meeting was canceled 3 days ago

2 She told me she was watching a film with her sister then

3 I admire the guitarist who is perfroming on the stage

4 Had it not been for Pauline's interest, the project would have been abandoned 

IV. 

1. The meeting was canceled 3 days ago.

2. She told me shewas watching a film with her sister then

3. I admire the guitarist who is performing on the stage

4. Had it not been for Pauline's interest, the project was abandoned. (chắc thế)