Lm chung đi nè <33 

`-x+3=0`

`=>-x=0-3`

`=>-x=-3`

`=>x=3`

Tớ không để ý mỗi mik môn Toán ạ .Bài nào vừa sức thì mik lm thì sai sao ạ ? Sao bn cứ sồn sồn lên như thế ạ ! 

`3^(3x-2)=9^x`

`=>3^(3x-2)=(3^2)^x`

`=>3^(3x-2)=3^(2x)`

`=>3x-2=2x`

`=>2x+(-3x)`

`=>x=2`

Nhầm ko nó để môn tiếng anh mà cậu ?

\(1\) Teacher

\(2\) Desk

\(3\) Ruler

\(4\) Pen

\(5\) Rubber

\(6\) Student

\(7\) Pencil case

\(8\) Calculator

\(9\) Book

\(10\) Chair

\( x - \dfrac{1}{2} | = \dfrac{3}{4} \)

\(TH1\)

\(x-\dfrac{1}{2}=\dfrac{3}{4}\)

\(x=\dfrac{3}{4}+\dfrac{1}{2}\)

\(x=\dfrac{3}{4}+\dfrac{2}{4}\)

\(x=\dfrac{5}(4}\)

\(TH2\)

\(x-\dfrac{1}{2}=\dfrac{-3}{4}\)

`=> x=-3/4+1/2`

`=> x=-3/4+2/4`

`=> x=-1/4`

Vậy `x∈{5/4; -1/4}`

`(12/61-31/22-14/91)(1/2-1/3-1/6)`

`=(12/61-31/22-14/91)*0/6`

`=(12/61-31/22-14/91)*0`

`=0`

\((x-29)-11=0\)

\(x-29-11=0\)

\(x-40=0\)

\(x=0+40\)

\(x=40\)

`=>C`