Đề thiếu rồi nha bạn, phải có đk là x;y là số tự nhiên mới đúng

5x+6y=72

<=>5x=72-6y

<=>x=(72-6y)/5

Để x là số tự nhiên thì 72-6y phải chia hết cho 5

Suy ra 6y có chữ số tận cùng là 2

6y={12;42}

<=>y=2;7

SUy ra x=12;6

Vậy x=12;6

       y=2;7

Merry Christmas everyone

1. Hoa _________ eating Vegetables because it's good for her health.
A. dislikes
B. likes
C. hates
D. doesn’t like
2. Don’t read in bed, _______ you’ll harm your eyes. A. or B. and C. but D . so
3. It's good to____ blood because you can save people's lives

A. help
B. use
C. donate
D. collect
4.
They _____ the beach one week ago.

A. cleaned
B. clean C. cleaning
D. to clean
5. I _________playing board games interesting because I can play them with my friends.
A. think
B. find
C. say
D. tell
6.
The room smells bad. Somebody __________ in here.
A.smoke B.smoked C.has smoked
III. Supply the correct forms or tense of the verbs in parentheses. (1.0 point)
1. Nga hasn't done her homework yet. (not do)
2. Last year, I visited Hue with my family .(visit)
3. We have learnt for 3 years. (learn)
4. Do you like taking part in "Be a Buddy"? (take)

1.I enjoy (fish)fishing because it(be)is relaxing.

2.I(not collect)don't dolls when I grow up.

3.Which words has the underlined part pronounced differently from the others?

A.away B.answer C.sunburn D.picture

4.Which words has main stress differently from the others?

A.volunteer B.charity C.melody................D.calorie

5.Beethoven.......a lot of songs.

A.composes B.composed D.compose C.has composed

6.The Japanese eat a lot of rice,and they eat a lot of fish too.

7.Pick out the word whose main stress is placed differently from the others.

A.allergy B.headache C.temperature D.obesity

8.Make this sentence using the provided words:

I/feel.happy/when/look at/beautiful flower vases made from them

=> I feel happy when I look at the beautiful folwer vases made from them