The initial equation is:
Let's transform it for x:
... distract 5:
... divide both sides by 5:
A^2 + b^2 = c^2
16^2 + 12^2 = c^2
256 + 144 = c^2
400 = c^2
sqrt 400 = c
20 = c <== the ladder is 20 ft long
The answer is 7.333, the threes are ongoing.
To find this answer you would just divide 44 and 6, since you are trying to find groups of the number stated.
Hope that helped.
If these are number systems then it will turn out like this 
How to solve Problem:
10.5÷1.5
Move both decimals all the way to the right
105÷15
Then solve from there. I'll give you a hint, It's a whole number.
