Question

(x-5/8 ). 5/8 = -15/39 

giải hộ mình nha . cảm ơn nhiều (^^:)

 

Answer 1

(x-5/8).5/8=-15/39

<=>x-5/8=-15/39 : 5/8

<=>x-5/8=-8/13

<=>x=-8/13 + 5/8

<=>x=1/104

Answer 2

\(\left(x-\dfrac{5}{8}\right).\dfrac{5}{8}=\dfrac{-15}{39}\)

\(x-\dfrac{5}{8}=\dfrac{-15}{39}:\dfrac{5}{8}\)

\(x-\dfrac{5}{8}=\dfrac{-8}{13}\)

\(x=\dfrac{-8}{13}+\dfrac{5}{8}\)

\(x=\dfrac{1}{104}\)

Answer 3

Ta có: \(\left(x-\dfrac{5}{8}\right)\cdot\dfrac{5}{8}=\dfrac{-15}{39}\)

\(\Leftrightarrow x-\dfrac{5}{8}=\dfrac{-5}{13}:\dfrac{5}{8}=\dfrac{-5}{13}\cdot\dfrac{8}{5}=\dfrac{-8}{13}\)

hay \(x=\dfrac{1}{104}\)