what is it simplified

2(x+3) -> 2x + 6

+ 4(x+4) -> 4x + 16

-------------------------

6x + 22

You first expand the expression and then combine the like terms. Here the expanding I'm talking about is the 2(x+3) -> 2x + 5 and so on, and the like terms as those with an x and those without an x (or constants).

Hope this explains everything :D