Question

tìm x 

1/5 - 1/5 : x =3/5

4/5 + x . 2/3

Answer 1

\(a,\dfrac{1}{5}-\dfrac{1}{5}:x=\dfrac{3}{5}\\ \Rightarrow\dfrac{1}{5}:x=\dfrac{1}{5}-\dfrac{3}{5}\\ \Rightarrow\dfrac{1}{5}:x=\dfrac{-2}{5}\\ \Rightarrow x=\dfrac{1}{5}:\dfrac{-2}{5}\\ \Rightarrow x=\dfrac{-1}{2}\)

câu b thiếu đề

Answer 2

a: =>1/5:x=-2/5

hay x=-1/2