Question

Tìm x biết lx-\(\frac{1}{3}\)l +4/5=l(-3,2)+2/5l

Answer 1

\(\left|x-\frac{1}{3}\right|+\frac{4}{5}=\left|-3,2+\frac{2}{5}\right|\)

\(\Rightarrow\left|x-\frac{1}{3}\right|+\frac{4}{5}=\frac{14}{5}\)

\(\Rightarrow\left|x-\frac{1}{3}\right|=2\)

\(\Rightarrow x-\frac{1}{3}=2\text{ hoặc }x-\frac{1}{3}=-2\)

\(\Rightarrow x=\frac{7}{3}\text{ hoặc }x=-\frac{5}{3}\)

Answer 2

<br class="Apple-interchange-newline"><div id="inner-editor"></div>|x−13 |+45 =|−3,2+25 |

⇒|x−13 |+45 =145 

⇒|x−13 |=2

⇒x−13 =2 hoặc x−13 =−2