Hello!
To solve this problem, we need to combine like terms (such as coefficients and variables or whole numbers).
3x+5+8x-4
We can combine 3x and 8x giving us 11x
11x+5-4
We can now combine 5 and -4, giving us 1
11x+1
Since we cannot combine 11x and one, it is our final answer.
11x+1
Hope this helps!