The answer is 7 because if you look at the bigger triangle you can see that all the numbers can be divided by 9 and on the smaller one you can see the answers to what was divided by 9. So ?=7
28/36 has a greatest common factor of 4.
So, yo can divide the top and bottom by 4.
28 divided by 4/36 divided by 4
7/9
The answer is 7/9
X = 72 because this is an isosceles triangle
