Question

\(\dfrac{x}{3}-\dfrac{1}{2}=\dfrac{1}{5}\)

Answer 1

\(\dfrac{x}{3}-\dfrac{1}{2}=\dfrac{1}{5}\)

\(\Leftrightarrow\dfrac{2x-3}{6}=\dfrac{1}{5}\)

\(\Leftrightarrow5\cdot\left(2x-3\right)=6\)

\(\Leftrightarrow10x=6+15=21\)

\(\Leftrightarrow x=\dfrac{21}{10}\)

Answer 2

Ta có: \(\dfrac{x}{3}-\dfrac{1}{2}=\dfrac{1}{5}\)

\(\Leftrightarrow\dfrac{x}{3}=\dfrac{1}{5}+\dfrac{1}{2}\)

\(\Leftrightarrow\dfrac{x}{3}=\dfrac{7}{10}\)

\(\Leftrightarrow x=\dfrac{3.7}{10}=\dfrac{21}{10}=2,1\)

Vậy x=2,1

 

Answer 3

x/3 - 1/2 = 1/5

x/10 - 5/10 = 2/10

x/10.          = 2/10+5/10

x/10.          = 7/10.     => x = 7

Answer 4

\(\Rightarrow\) \(\dfrac{x}{3}\) = \(\dfrac{1}{5}\) + \(\dfrac{1}{2}\) 

\(\Rightarrow\) \(\dfrac{x}{3}\) = \(\dfrac{2}{10}\) + \(\dfrac{5}{10}\)

\(\Rightarrow\) \(\dfrac{x}{3}\) = \(\dfrac{7}{10}\)

Answer 5

Ta có: \(\dfrac{x}{3}-\dfrac{1}{2}=\dfrac{1}{5}\)

\(\Leftrightarrow\dfrac{x}{3}=\dfrac{1}{5}+\dfrac{1}{2}=\dfrac{7}{10}\)

hay \(x=\dfrac{21}{10}\)

Vậy: \(x=\dfrac{21}{10}\)

Answer 6

\(\dfrac{x}{3}-\dfrac{1}{2}=\dfrac{1}{5}\) 

        \(\dfrac{x}{3}=\dfrac{1}{5}+\dfrac{1}{2}\)  

         \(\dfrac{x}{3}=\dfrac{7}{10}\) 

\(\Rightarrow x=\dfrac{3.7}{10}=\dfrac{21}{10}\)