2x - 5 chia hết cho x - 4

x - 4 chia hết cho x -4 nên 2( x - 4 ) chia hết cho x - 4 , tức 2x - 8 chia hết  ho x - 4

Để 2x - 5 chia hết cho x - 4 thì 2x - 5  - ( 2x - 8 ) chia hết cho x - 4

=> 2x - 5 - 2x + 8 chia hết cho x - 4

=> 3 chia hết cho x - 4

=> x - 4 thuộc ước của 3

Ta lập bảng : 

k với ><><
 

Ewan McGregor was (1) _____ in Scotland in 1971. He decided to be an (2)_____ when he was only nine and he made his first film (3) _____ 1992. So far in his career he has appeared with a lot of different types of films, including comedies, musical, dramas and the Star Wars movies. In his career Ewan has worked with actresses like Cameron Diaz and Nicole Kidman, and his films have won (4)_____ of awards. He said that he loved his career very much.

1. A. bear B. born C. bearing D. beared

2. A. acting B. actress C. actor D. action

3. A. in B. on C. at D. for

4. A. a lots B. lots C. much D. some

#maymay#

x : 5 = 4 : 6

x : 5 = \(\frac{4}{6}\)

x = \(\frac{4}{6}\)x 5

x = \(\frac{4.5}{6}\)

x = \(\frac{2.2.5}{2.3}\)

x = \(\frac{10}{3}\)

Vậy x = \(\frac{10}{3}\)

9+9=18

có! ở đảo hoang

hay hay hay

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