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![](https://rs.olm.vn/images/avt/0.png?1311)
Xin phép bỏ biểu diễn trên trục :))
a) \(2x-1< 2\left(x-1\right)\)
\(\Leftrightarrow2x-1< 2x-2\)
\(\Leftrightarrow2x-2x< 1-2\)
\(0x< -1\)( vô lí )
Vậy bất phương trình vô nghiệm.
b) \(\frac{x-1}{3}-\frac{2+3x}{4}>\frac{1}{6}\)
\(\Leftrightarrow\frac{4\left(x-1\right)-3\left(2+3x\right)}{12}>\frac{2}{12}\)
\(\Leftrightarrow4x-4-6-9x>2\)
\(\Leftrightarrow-5x-10>2\)
\(\Leftrightarrow-5x>12\)
\(\Leftrightarrow x< \frac{-12}{5}\)
Vậy...........
![](https://rs.olm.vn/images/avt/0.png?1311)
![](https://rs.olm.vn/images/avt/0.png?1311)
\(\frac{x+4}{5}+\frac{3x+2}{10}< \frac{x-1}{3}\)
\(\Leftrightarrow\frac{6\left(x+4\right)}{30}+\frac{3\left(3x+2\right)}{30}< \frac{10\left(x-1\right)}{30}\)
\(\Leftrightarrow6x+24+9x+6< 10x-10\)
\(\Leftrightarrow5x+40< 0\)
\(\Leftrightarrow x< -8\)
Tự biểu diễn nha bạn
\(\frac{x+4}{5}+\frac{3x+2}{10}< \frac{x-1}{3}\)
\(\Rightarrow\frac{6\left(x+4\right)}{30}+\frac{3\left(3x+2\right)}{30}< \frac{10\left(x-1\right)}{30}\)
\(\Rightarrow6x+24+9x+6< 10x-10\)
\(5x< -40\)
\(\Rightarrow x< -8\)
![](https://rs.olm.vn/images/avt/0.png?1311)
\(\Leftrightarrow\frac{2x+1-6x+4}{4}-\frac{1}{4}\ge0\Leftrightarrow\frac{-4x+4}{4}\ge0\Rightarrow-4\left(x-1\right)\ge0\left(4>0\right)\Rightarrow x-1\le0\left(-4
![](https://rs.olm.vn/images/avt/0.png?1311)
\(1-2\left(x+1\right)\ge5\left(x-2\right)+2\)
\(\Leftrightarrow1-2x-2\ge5x-10+2\)
\(\Leftrightarrow-2x-5x\ge-10+2-1+2\)
\(\Leftrightarrow-7x\ge-7\)
\(\Leftrightarrow x\le1\)
\(\frac{3x+3}{3x-2}< 1\)
\(\Leftrightarrow\frac{3x-2+5}{3x-2}< 1\)
\(\Leftrightarrow1+\frac{5}{3x-2}< 1\)
\(\Leftrightarrow\frac{5}{3x-2}< 0\)
\(\Leftrightarrow3x-2< 0\)
\(\Leftrightarrow3x< 2\)
\(\Leftrightarrow x< \frac{2}{3}\)