Factories both equations:
5(x - 4) / (x + 2)(x - 4)
Then take out the common brackets:
5 / x + 2
Minus 2 from both sides:
3 / x
If you are looking for the greatest common factor of the numerator and denominator, the answer would be (x - 4)
6 hours
Working;
If 12 cookies take 30 minutes,
Then one cookie takes

144 cookies would take <span>

* 144
=360 minutes or 6 hours</span>