$[(8x - 12)÷4]‧3^3 = 3^6$

$(8x - 12) ÷ 4 = 3^6÷3^3$

$(8x - 12) ÷ 4 = 27$

$8x - 12 = 27‧4$

$8x - 12 = 108$

$8x = 108 + 12$

$8x = 120$

$x = 120÷8$

$x = 15$

Vậy...

thiếu đề bài ròi bạn!

`(2x + 1)‧2907 = 8721`

`2x + 1 = 8721 ÷ 2907`

`2x + 1 = 3`

`2x = 3 - 1`

`2x = 2`

`x = 2÷2`

`x = 1`

Vậy....

Dạ vâng ạ !

Cậu nhấn vào 456 xong cậu lướt xuống là thấy nha!

$\frac{6}{24}= \frac{6÷6}{24÷6} = \frac{1}{4}$

$\frac{8}{64}= \frac{8÷8}{64÷8} = \frac{1}{8}$

\(\left(\dfrac{2x-3}{2x}\right)^2=36\)

\(\Rightarrow\left(\dfrac{2x-3}{2x}\right)^2=\left(\pm6\right)^2\)

\(\Rightarrow\left[{}\begin{matrix}\dfrac{2x-3}{2x}=6\\\dfrac{2x-3}{2x}=-6\end{matrix}\right.\)\(\Rightarrow\left[{}\begin{matrix}\dfrac{2x}{2x}-\dfrac{3}{2x}=6\\\dfrac{2x}{2x}-\dfrac{3}{2x}=-6\end{matrix}\right.\)\(\Rightarrow\left[{}\begin{matrix}1-\dfrac{3}{2x}=6\\1-\dfrac{3}{2x}=-6\end{matrix}\right.\)\(\Rightarrow\left[{}\begin{matrix}\dfrac{3}{2x}=1-6\\\dfrac{3}{2x}=1--6\end{matrix}\right.\)\(\Rightarrow\left[{}\begin{matrix}\dfrac{3}{2x}=1-6\\\dfrac{3}{2x}=1+6\end{matrix}\right.\)\(\Rightarrow\left[{}\begin{matrix}\dfrac{3}{2x}=-5\\\dfrac{3}{2x}=7\end{matrix}\right.\)\(\Rightarrow\left[{}\begin{matrix}\dfrac{3}{2}\cdot\dfrac{1}{x}=-5\\\dfrac{3}{2}\cdot\dfrac{1}{x}=7\end{matrix}\right.\)\(\Rightarrow\left[{}\begin{matrix}\dfrac{1}{x}=-5:\dfrac{3}{2}\\\dfrac{1}{x}=7:\dfrac{3}{2}\end{matrix}\right.\)\(\Rightarrow\left[{}\begin{matrix}\dfrac{1}{x}=-\dfrac{10}{3}\\\dfrac{1}{x}=\dfrac{14}{3}\end{matrix}\right.\)\(\Rightarrow\left[{}\begin{matrix}1:x=-\dfrac{10}{3}\\1:x=\dfrac{14}{3}\end{matrix}\right.\)\(\Rightarrow\left[{}\begin{matrix}x=1:-\dfrac{10}{3}\\x=1:\dfrac{14}{3}\end{matrix}\right.\)\(\Rightarrow\left[{}\begin{matrix}x=-\dfrac{3}{10}\\x=\dfrac{3}{14}\end{matrix}\right.\)

Vậy \(x\in\left\{-\dfrac{3}{10};\dfrac{3}{14}\right\}\)

\(4598+2075\)

Vậy \(4598+2075=6673\)

\(94372-48091\)

Vậy \(94372-48091=46281\)

\(804\times63\)

Vậy \(804\times63=50652\)

\(21280:35\)

Vậy \(21280:35=608\)

chị chưa hiểu đề của em , yêu cầu của e là gì?

hello OoO!