3x + 15 because u add all the x and then all real numbers
Well, you have to be given an interval. That is not an interval.
You should be given something like
![1 \leq x \leq 2](https://tex.z-dn.net/?f=1%20%5Cleq%20x%20%5Cleq%202)
If you add those fractions up you'll just get a point on the number line.
Find the LCD for all of them which is 9/6 - 4/6 + 3/6 = 8/6 = 2/3
You'll end up with a point on 2/3
-3x+6.3=-14.4
-6.3=-6.3
-<u>3x</u>=-<u>20.7</u>
-3 -3
x=6.9