ta có: p+ n+ e= 24
theo gt: p= e; n= 8
\(\Rightarrow\) 2p+ 8= 24
\(\Rightarrow\) p= n= 8
n= 8
\(\left\{{}\begin{matrix}p+e+n=24\\n=8\\p=e\end{matrix}\right.\)
\(\Leftrightarrow\left\{{}\begin{matrix}2p+n=24\\n=8\end{matrix}\right.\)
\(\Leftrightarrow\left\{{}\begin{matrix}p=e=8\\n=8\end{matrix}\right.\)
ta có: p+ n+ e= 24
theo gt: p= e; n= 8
\(\Rightarrow\) 2p+8= 24
\(\Rightarrow\) p= e= 8
n= 8
\(\left\{{}\begin{matrix}p+n+e=24\\n=8\\p=e\end{matrix}\right.\)
\(\Leftrightarrow\left\{{}\begin{matrix}2p+n=24\\n=8\end{matrix}\right.\)
\(\Leftrightarrow\left\{{}\begin{matrix}2p+8=24\\n=8\end{matrix}\right.\)
\(\Leftrightarrow\left\{{}\begin{matrix}p=e=6\\n=8\end{matrix}\right.\)