Answer :

What you need to do is make sure the denominators are the same so multiply 7/10 by 6. It should now be 42/60. Next multiply 3/6 by 10. It should now equal 30/60. 7/10 = 42/60. 3/6 = 30/60. 7/10 is greater. I hope this was somewhat helpful :3
x 6  = 42
10   6     60 

x 10 = 30
6     10    60

42
30
60    60
 so
7/10 > 3/6