5n + 10 = 6n + 3
10 – 3 = 6n – 5n
7 = 1n
n = 7
Nothing else to add, I think it's complete. If anything else you don't understand, or want to make something clearer, message me.
Here is another way to look at it:
1. 5(n+2)=3/5(5+10n)
2. Do foil >> 5n+10=3+6n
3. Subtract "3" from each side >> 5n+7=6n
4. Isolate "n" and subtract "5n" from each side >> 7=n