\(x=\dfrac{-3}{6}+\dfrac{3}{6}=0\)
\(x=\dfrac{-1}{2}+\dfrac{3}{6}=\dfrac{-1}{2}+\dfrac{1}{2}=0\left(\dfrac{3}{6}=\dfrac{1}{2}\right)\)
\(x=\dfrac{-1}{2}+\dfrac{3}{6}=\dfrac{1}{2}+\dfrac{3:3}{6:3}=\dfrac{-1}{2}+\dfrac{1}{2}=\dfrac{-1+1}{2}=\dfrac{0}{2}=0\)
(được chưa :)
x=-1/2+3/6=-(1/2-3/6)=-(3/6-3/6)=-0 số đẹp