Question

Answer 1

\(\dfrac{4}{5}x-\dfrac{1}{5}=-1\)

\(\dfrac{4}{5}x=-1+\dfrac{1}{5}\)

\(\dfrac{4}{5}x=-\dfrac{4}{5}\)

\(\Rightarrow x=-1\)

Answer 2

4/5x = -1+1/5

4/5x = -4/5

     x = -4/5 : 4/5

     x= -1

Answer 3

\(\dfrac{4}{5}x-\dfrac{1}{5}=-1\)

\(\Leftrightarrow\)\(\dfrac{4}{5}x=-1 +\dfrac{1}{5}\)

\(\Leftrightarrow\)\(\dfrac{4}{5}x=-\dfrac{4}{5}\)

\(\Leftrightarrow\)\(x=-1\)

Answer 4

\(\dfrac{4}{5}x-\dfrac{1}{5}=-1\)

\(\dfrac{4}{5}x=-1+\dfrac{1}{5}\)

\(\dfrac{4}{5}x=-\dfrac{4}{5}\)

\(x=-\dfrac{4}{5}:\dfrac{4}{5}\)

\(x=-1\)

Chúc bn học tốt ^^