Note that the first fraction can be reduced to
4
__ so we have
3
4 + 5
__ ______
3 2n + 8
Cross-multiply and keep the addition sign between the terms
4 (2n + 8) + 3 * 5 simplify
8n + 32 + 15
8n + 47 (1)
Take the product of the denominators
3 ( 2n + 8) = 6n + 24 (2)
Put (1) over (2)
8n + 47
_______ and that's it, RP !!!!
6n + 24