Question

( x + \(\dfrac{1}{2}\) ) . \(\dfrac{3}{4}\) = 0

Answer 1

\(\left(x+\dfrac{1}{2}\right).\dfrac{3}{4}=0\)

\(\Leftrightarrow x+\dfrac{1}{2}=0:\dfrac{3}{4}\)

\(\Leftrightarrow x+\dfrac{1}{2}=0\)

\(\Leftrightarrow x=0-\dfrac{1}{2}\)

\(\Leftrightarrow x=\dfrac{-1}{2}\)

Vậy ...

Answer 2

\(\left(x+\dfrac{1}{2}\right).\dfrac{3}{4}=1\)

\(\Rightarrow\left(x+\dfrac{1}{2}\right)=1:\dfrac{3}{4}\)

\(\Rightarrow x+\dfrac{1}{2}=\dfrac{4}{3}\)

\(\Rightarrow x=\dfrac{4}{3}-\dfrac{1}{2}\)

\(\Rightarrow x=\dfrac{5}{6}\)