Câu 3: Nếu a b và  b//c thì

A.  a // b // c                  B.  a  c                       C.  a // c       

 $3.\left(\mathrm{x}-\frac{1}{2}\right)-5.\left(x+\frac{3}{5}\right)=-x+\frac{1}{5}$

Viết lại câu

1.      Could  you turn  the  radio  down, please?

Will  you  …………………………………?

4.What about some bananas ?                             

 Would you ………………..?

so sánh $2^{300} \mathrm{và} 3^{200}$ ;  $5^{300}\mathrm{và} 3^{500}$

$\frac{6^3 + 3 \times 6^2 +4^3}{-13}$