X=-59/24 is the answer for you
28/24 = 1 4/24 or 1 1/6
to simplify the answer you divide the denominator into the numerator and get 1 4/24
then reduce 4/24 by dividing the greatest common multiple into the numerator and the denominator to reduce the fraction to the lowest terms so 4/24 = 1/6 when it is divided by 4
So that gives us the final answer of 1 1/6
48 c atoms
88 h atoms
44 o atoms
The answer will be sixteen 16 over five 5
The coordinate of A would be (10,2)