Answer:
Haha! Dont stress it! There doing expressions can be a breeze. The letters (Such as 3x + 4y=) Are just there to be there.
Explanation:
Its been a while but here we go.
Say we have 1/2 (6y-8n+2)
First, Solo out the ones inside the () and break them them by 1/2
1/2 of 6= 3n
1/2 of 8n=4n
1/2 of 2= a
So, 3n-4n+2!
Piece of cake! If you need more help, just ask! Or check out kahn academy too. That helps out A LOT!