You can simply 27 over 72 by taking the greatest common factor- 9- and dividing them both by that number. 27/9=3, 72/9=8. So, you can simplify 27/72 to 3/8.
one over two
It is: 84/72 = 7/6 simplified
1/2
5/16th
13 over 36
It is: 56/72 = 7/9 by dividing 56 and 72 by their HCF
No
No.
27/1 = 27
27/9 = 3
12/35
2/3 :D