Answer:
1/2
Step-by-step explanation:
8 doors
3 and 12
3*5=15 and 15-3=12. The product of 3 and 12 is 36.
So in order to get all the fractions to have a common denominator, we need to multiply by , and by :
Now,
As long as and (which we can't have because otherwise ), we can cancel in the denominators on both sides:
We can factorize the right side:
which tells us that and are solutions.