TL:
1, is/ is lying
2, went
3, will explain
4, What will she do tomorrow?
5, is going to rain 
6, will wait /come
7, will go
8, come / wil phone (when=whet)
#Sai thì thông cảm ah!

HT!

TL:
\(0,75\times4-x=0,25:\dfrac{1}{8}\)
\(\Rightarrow3-x=0,25:0,125\)
\(\Rightarrow3-x=2 \)
\(\Rightarrow x=1\)
Vậy x=1
HT!

TL: 

\(S=7+\dfrac{7}{3}+\dfrac{7}{6}+\dfrac{7}{10}+\dfrac{7}{15}+\dfrac{7}{21}+\dfrac{7}{28}+\dfrac{7}{36}+\dfrac{7}{45}+\dfrac{7}{55}\)
\(S=7\left(1+\dfrac{1}{3}+\dfrac{1}{6}+\dfrac{1}{10}+\dfrac{1}{15}+\dfrac{1}{21}+\dfrac{1}{28}+\dfrac{1}{36}+\dfrac{1}{45}+\dfrac{1}{55}\right)\)
\(S=7.\left(\dfrac{2}{2}+\dfrac{2}{6}+\dfrac{2}{12}+\dfrac{2}{20}+...+\dfrac{1}{110}\right)\)
\(S=7.2\left(\dfrac{1}{2}+\dfrac{1}{6}+\dfrac{1}{12}+\dfrac{1}{20}+...+\dfrac{1}{110}\right)\)
\(S=14\left(\dfrac{1}{1.2}+\dfrac{1}{2.3}+\dfrac{1}{3.4}+\dfrac{1}{4.5}+...+\dfrac{1}{10.11}\right)\)

\(S=14\left(1-\dfrac{1}{2}+\dfrac{1}{2}-\dfrac{1}{3}+\dfrac{1}{3}-\dfrac{1}{4}+\dfrac{1}{4}-\dfrac{1}{5}+...+\dfrac{1}{10}-\dfrac{1}{11}\right)\)
\(S=14\left(1-\dfrac{1}{11}\right)\)
\(S=14.\dfrac{10}{11}\)
\(S=\dfrac{140}{11}\)
Vậy \(s=\dfrac{140}{11}\)
HT!

TL:
4(3x-4)-2 =18
=> 4(3x-4) =18+2
=> 4(3x-4) = 20
=>    3x-4   = 20:4
=>    3x-4   = 5
=>    3x      = 5+4
=>    3x      = 9
=>      x      = 9:3
=>      x      = 3
Vậy x=3
HT!

TL:
(40-3x)-37=21
=> 40-3x   =21+37
=> 40-3x   = 58
=>      3x   = 40-58
=>      3x   = -18
=>        x   = -18 : 3

=>        x   = -6
Vậy x=-6
HT!

Mik viết nhầm x=8 nha bạn. Chứ không phải x = 18

TL:
\(\left(\dfrac{2}{5}-x\right):\left(-1\dfrac{1}{3}\right)=\dfrac{5}{4}\)

\(\dfrac{2}{5}-x=\dfrac{5}{4}\times\left(-1\dfrac{1}{3}\right)\)
\(\dfrac{2}{5}-x=\dfrac{5}{4}\times\left(-\dfrac{4}{3}\right)\)

\(\dfrac{2}{5}-x=-\dfrac{5}{3}\)
\(x=\dfrac{2}{5}-\left(-\dfrac{5}{3}\right)=\dfrac{31}{15}\)
Vậy \(x=\dfrac{31}{15}\)
HT!
 

TL: 

Chia động từ ở thì hiện tại đơn hoặc thì hiện tại tiếp diễn 

1. Excuse me, Do you speak English?

2. "Where is Tom?" "He is having a shower.

3. I am watching television very often.

4. Listen! Somebody is singing 

5. Sandra is tired. She is wanting  to go home now.

6. How often do you a newspaper?

7. Excuse me, but you are sitting in the place.

8. I'm sorry, I am understanding

9. It's late. I am going home now.

10. What time does your father finish work?

11. You can turn off the radio. I am not listening to it.

12. "Where is Paul?" "He's in the kitchen. He is cooking something.

13. Sue does like coffee. She prefers tea.

14. Julia is playing in the park now.
*Sai thì thông cảm*
HT!
 

TL:
3(x-4) - (8-x)= 12
=> 3x -3.4     = 12+ (8-x)
=> 3x -12     = 12+ 8-x
=> 3x+x       = 12+ 8+12
=> 4x           = 32
=> x             = 32:4
=> x             = 8
Vậy x=18
HT!