4(2x + 3y)
The first step is distribution.
Multiply 4 by every term in the parentheses.
(4*2x) + (4*3y)
8x + 12y
The simplified version of 4(2x + 3y) is 8x + 12y.
You can't simplify further because you have two different variables, x and y, which can't be combined.