mk thích Tf Boys vs Twice

Mark the letter A, B, C or D on your answer sheet to indicate the word whose underlined part is differs from the other three in pronunciation in each of the following questions

A. buses

B. houses

C. watches

D. gestures

x + 3y chia hết cho 7 

=> 5(x + 3y) chia hết cho 7 

=> 5x + 15y chia hết cho 7 

=> (5x + 15y) - 21y chia hết cho 7  (vì 21y chia hết cho 7)

=> 5x - 6y chia hết cho 7 (đpcm)

will play or are going to play

1b,2b