Answer:

Step-by-step explanation:
Given:

We need to complete this Statement.
By Solving the above equation we get;
We will take some common factor out so we will get;

Hence the Complete statement is 
That’s true!!!! They totally should do that!
A scientific theory is a validated explanation of some aspect of the natural world, based on multiple facts that have been frequently verified through research and experimentation. Fact theories are not "guesses" but reliable accounts of the real world.
Answer:15
Step-by-step explanation:5 and 3 both go into 15
** x + 5 = 7
x = 2
** x + 5 = 9
x = 4
{2,4}