7/4 - | 3/10-7/20|-x = 2- | 1/4-9/10|
7/4- 1/20 -x = 2- 13/20
17/10-x = 27/20
x = 17/10 - 27/20
x = 7/20
Chúc bạn học tốt
\(\dfrac{7}{4}-\left|\dfrac{3}{10}-\dfrac{7}{20}\right|-x=2-\left|\dfrac{1}{4}-\dfrac{9}{10}\right|\)
\(\Rightarrow\dfrac{7}{4}-\left|\dfrac{-1}{20}\right|-x=2-\left|\dfrac{-13}{20}\right|\)
\(\Rightarrow\dfrac{7}{4}-\dfrac{1}{20}-x=2-\dfrac{13}{20}\)
\(\Rightarrow-x=2-\dfrac{13}{20}-\dfrac{7}{4}+\dfrac{1}{20}\)
\(\Rightarrow-x=\dfrac{-7}{20}\Rightarrow x=\dfrac{7}{20}\)
Vậy \(x=\dfrac{7}{20}\)
Chúc bạn học tốt!!!
\(\dfrac{7}{4}-\left|\dfrac{3}{10}-\dfrac{7}{20}\right|-x=2-\left|\dfrac{1}{4}-\dfrac{9}{10}\right|\)
=>\(\dfrac{7}{4}-\dfrac{1}{20}-x=2-\dfrac{13}{20}\)
=>\(\dfrac{7}{4}-\dfrac{1}{20}-x=\dfrac{27}{20}\)
=>\(x=\dfrac{7}{4}-\dfrac{1}{20}-\dfrac{27}{20}\)
=>\(x=\dfrac{7}{20}\)
\(\dfrac{7}{4}-\left|\dfrac{3}{10}-\dfrac{7}{20}\right|-x=2-\left|\dfrac{1}{4}-\dfrac{9}{10}\right|\)
\(\Leftrightarrow\dfrac{7}{4}-\left|-\dfrac{1}{20}\right|-x=2-\left|-\dfrac{13}{20}\right|\)
\(\Leftrightarrow\dfrac{7}{4}-\dfrac{1}{20}-x=2-\dfrac{13}{20}\)
\(\Leftrightarrow\dfrac{17}{10}-x=\dfrac{27}{20}\)
\(\Leftrightarrow x=\dfrac{17}{10}-\dfrac{27}{20}\)
\(\Leftrightarrow x=\dfrac{7}{20}\)
Vậy \(x=\dfrac{7}{20}\)
help me
