Sorry, it was a little long process. I could not explain them all. I said the result directly.And I am Turkish, sorry if there is a problem with my pronunciation.But remember, you will do it according to the distribution in the parenthesis.
The way to do this question is : difference of the two sides < x < sum of the two sides. so for 1) 4 < x< 8 2) 8 < x< 16 3) 9 < x < 13 i’m pretty sure this is right! hope it helps!
