\(-x-2=\dfrac{5}{4}\\ -x=\dfrac{5}{4}+2\\ -x=\dfrac{13}{4}\\ \Rightarrow x=-\dfrac{13}{4}\)
\(-x-2=\dfrac{5}{4}\)
\(-x=\dfrac{5}{4}+2\)
\(-x=\dfrac{5}{4}+\dfrac{8}{4}\)
\(-x=\dfrac{13}{4}\)
\(x=-\dfrac{13}{4}\)
\(-x-2=\dfrac{5}{4}\) \(\Leftrightarrow-x=\dfrac{5}{4}+2\) \(\Leftrightarrow-x=\dfrac{5}{4}+\dfrac{8}{4}\) \(\Leftrightarrow-x=\dfrac{13}{4}\) \(\Leftrightarrow x=-\dfrac{13}{4}\)
Vậy...
\(-x-2=\dfrac{5}{4}\)
\(-x=\dfrac{5}{4}+2\)
\(-x=-\dfrac{13}{4}\)
tick vs
\(-x-2=\dfrac{5}{4}\)
\(-x=\dfrac{5}{4}+2\)
\(-x=\dfrac{13}{4}\)
\(x=\dfrac{-13}{4}\)