Question

Tìm x biết:

|x-1phần3| + 4phần5 = |(-3.2)+2phần5|

Answer 1

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

\(\left|x-\frac{1}{3}\right|+\frac{4}{5}=\frac{11}{10}\)

\(\left|x-\frac{1}{3}\right|=\frac{3}{10}\)

\(\Rightarrow\hept{\begin{cases}x-\frac{1}{3}=\frac{3}{10}\\x-\frac{1}{3}=-\frac{3}{10}\end{cases}\Rightarrow\hept{\begin{cases}x=\frac{19}{30}\\x=\frac{1}{30}\end{cases}}}\)

Vậy..........

Answer 2

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