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

\(\left\{{}\begin{matrix}\left|x-\dfrac{1}{2}\right|\ge0\\\left|2x-\dfrac{3}{4}\right|\ge0\end{matrix}\right.\)

\(\Rightarrow2x-\dfrac{3}{4}\ge0\)

\(\Rightarrow\left|2x-\dfrac{3}{4}\right|=2x-\dfrac{3}{4}\)

\(\Rightarrow\left|x-\dfrac{1}{2}\right|=1\)

\(\Rightarrow\left[{}\begin{matrix}x-\dfrac{1}{2}=1\Rightarrow x=\dfrac{3}{2}\\x-\dfrac{1}{2}=-1\Rightarrow x=-\dfrac{1}{2}\end{matrix}\right.\)

\(2x-\dfrac{3}{4}\ge0\Rightarrow2x\ge\dfrac{3}{4}\Rightarrow x\ge\dfrac{3}{2}\)

Vậy xảy ra khi:

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

mk giải cho bạn ở trên r đó

\(\frac{-2}{3}\left(x-\frac{1}{4}\right)=\frac{1}{3}\left(2x-1\right)\)\(\Leftrightarrow-2\left(x-\frac{1}{4}\right)=2x-1\)\(\Leftrightarrow-2x+\frac{1}{2}-2x+1=0\Leftrightarrow x=\frac{3}{8}\)

minh muon hoi -2 o dau vay

chia cả 2 vế cho \(\frac{1}{3}\) nhé

12x/6 + 4x/6 - 3x/6 = 3/8 - 1/4 - 1/6

13x/6 = (9 - 6 - 4)/24 = -1/24

--> x = -1/52

2(x-1)-3(2x+2)-4(2x+3)=16

2x-2-6x+6-8x+12=16

(2x-6x-8x)-(2+6+12)=16

(-12).x-20=16

(-12).x=16+20=36

x=36:(-12)=-3

2(x-1)-3(2x+2)-4(2x+3)=16

2x-2-6x-6-8x-12=16

2x-6x-8x=16+2+6+12

-12x=36

x=-3

Bạn ấy trả lời đúng rồi

Mike bạn ấy nhé

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