Answer :
[tex]4(2n-5)=3n+10\\\\
8n-20=3n+10\ \ \ |Subtract\ 3n\\\\
5n-20=10\ \ \ Add\ 20\\\\
5n=30\ \ \ |Divide\ by\ 5\\\\
n=\frac{30}{5}=6\\\\Solution\ is\ n=6.[/tex]
4(2n-5)=3n+10
8n-20=3n+10
8n-3n-20=3n-3n+10
5n-20=10
5n-20+20=10+20
5n=30
5n/5=30/5
n=6