Question

tim n đê n+5/n+3=1/2

Answer 1

\(\frac{n+5}{n+3}=\frac{1}{2}\)

\(\Leftrightarrow\left(n+5\right)\cdot2=n+3\)

\(\Rightarrow2n+10=n+3\)

\(\Rightarrow2n-n=-10+3\)

\(\Rightarrow n=-7\)

Answer 2

n+5/n+3=n+3+2/n+3=1+2/n+2=1/2

=>2/n+2=1/2-1

=>2/n+2=-1/2

=>n+2=-4

=>n=-6

Vậy n=-6