Question

tìm x :

0,25.x-\(\dfrac{27}{8}\).x=\(\dfrac{3}{4}\)

Answer 1

\(0,25x-\dfrac{27}{8}x=\dfrac{3}{4}\)

\(\Rightarrow\left(0,25-\dfrac{27}{8}\right)x=\dfrac{3}{4}\)

\(\Rightarrow\dfrac{-25}{8}x=\dfrac{3}{4}\Rightarrow x=-\dfrac{6}{25}\)

Chúc bạn học tốt!!!

Answer 2

\(0,25.x-\dfrac{27}{8}.x=\dfrac{3}{4}\)

\(\dfrac{2}{8}.x-\dfrac{27}{8}.x=\dfrac{3}{4}\)

\(x\left(\dfrac{2}{8}-\dfrac{27}{8}\right)=\dfrac{3}{4}\)

\(x.\dfrac{-25}{8}=\dfrac{3}{4}\Leftrightarrow x=\dfrac{3}{4}:\dfrac{-25}{8}=\dfrac{-6}{25}\)

Answer 3

\(0.25\cdot x-\dfrac{27}{8}\cdot x=\dfrac{3}{4}\)

\(\dfrac{2}{8}\cdot x-\dfrac{27}{8}\cdot x=\dfrac{3}{4}\)

\(\left(\dfrac{2}{8}-\dfrac{27}{8}\right)\cdot x=\dfrac{3}{4}\)

\(\dfrac{-25}{8}\cdot x=\dfrac{3}{4}\)

\(x=\dfrac{3}{4}:\dfrac{-25}{8}\)

\(x=\dfrac{-6}{25}\)

Vậy \(x=\dfrac{-6}{25}\).