1.he haves dinner now

=> he is having dinner now.

2.he usually have a big breakfast every morning.

=> he has a big breakfast every morning.

3.we aren't like his character.He is selfish

=> we don't like his character.He is selfish

4.Mr.Hung go to work by car because he lives far from his office.

=> Mr . Hung goes to work by car because he lives far from his office.

5.where are your motobike key?-Can I borrow it?

=> where is your motobike key?-Can I borrow it?

Dễ thui mà, a x b = ƯCLN(a,b) × BCNN(a,b)

=> a x b = 13 x 78 = 1014

Giải thích: Do ƯCLN(a,b) = 13

=> a = 13 × a'; b = 13 × b' (a',b')=1

=> BCNN(a,b) = 13 × a' × b'

Mà a x b = 13 x a' x 13 x b'

=> a x b = 13 × 78 = 1014

Ủng hộ mk nha ☆_☆^_-

Ta có : s - r = 150 

           r = s : 2 

           r = 150 : ( 2-1 ) x 1 = 150

           s = 150 + 150 = 300

                    Đáp số : r : 150 

                                 s : 300

Số thứ nhất là:

    [357+33]: 2=195

Số thứ 2 là:

    195-33=162

a + 2 ; a + 1 ; a

Đúng 100 %

a =26

b = 39

a.b = 1014

Số cặp góc đối đỉnh tạo thành là:

20 x 2 = 40(cặp góc đối đỉnh)

Đ/S: 40 cặp góc đối đỉnh

11.999=10989

11.999=10989

mong mn ung ho va t