120 + 150 = x + 200

270 = x + 200

x = 270 - 200

x = 70

1. Shall we go to the movies ? - Yes , (That' s a good ideal / we shall / we do )

2. She is thirsty and he is (so/ too / either )

3. Fruit juice is good (for / to / with ) our health

4.He is a (skill / skillful/ skillfully ) volleyball player

5.She ought to ( finish / finishes / finished) her homework before going to bed .

6. (When/ What /Why ) was Lan absent yesterday ? Because she was sick .

7. (Walking/ to walk / walk ) is a fun , easy and inexpensive

8. Liz and her parents (go/ to go / went ) to Nha Trang last week .

9. Remember to ( lose / keep / make ) in touch with me

10. The girl decided to learn (how / what / which ) to use a sewing machine .

11.(What / why/ who ) did Hoa go to the dentist ? Because she had a cavity

☘ Perfect Answer ☘

~ ✰ Study well ✰ ~

1 + 9 + 2 + 8 = ( 1 + 9 ) + ( 2 + 8 ) 

                    =     10     +    10

                    =             20

100,13dam vuong

a)3km45m=3.045km

b)4km9m=4.009km

c)112dm=11.2m

d)256cm=2.56m

khó lắm

=>(x+1).(2-x)-3x-5 +4x²-2=0

=>(x+1).(2-x)+(4x²-3x-7)=0

=>(x+1).(2-x)+(4x² -7x+4x-7)=0

=>(x+1)(2-x)+[x.(4x-7)+(4x-7)]=0

=>(x+1)(2-x)+(4x-7).(x+1)=0

=>(x+1).[(2-x)+(4x-7)]=0

=>(x+1).(2-x+4x-7)=0

=>(x+1).(3x-5)=0

=>hoặc x+1=0 hoặc 3x-5=0

=>hoặc x=-1 hoặc x=5/3

Thử lại vào phép tính k hề đúng  Nguyen ngoc dat ơi , thử lại đi 

a)23.45+45.77

= (23+77).45

=100.45 

=4500

kb vs t đi