Question

Answer 1

\(\dfrac{x-1}{3}=\dfrac{-2}{5}\\ \Rightarrow5\left(x-1\right)=-2.3\\ \Rightarrow5x-5=-6\\ \Rightarrow5x=-6+5\\ \Rightarrow5x=-1\\ \Rightarrow x=-\dfrac{1}{5}\)

Answer 2

X=-1/5

Answer 3

c) \(\dfrac{x-1}{3}=\dfrac{-2}{5}\)

\(\Leftrightarrow5\left(x-1\right)=\left(-2\right).3\)

\(\Leftrightarrow5x-5=-6\)

\(\Leftrightarrow5x+1=0\)

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

Vậy \(x=\dfrac{-1}{5}\)