Hi!
So, let's go ahead and see what these fractions are in decimal form.
3/8: 0.375
7/16: 0.4375
Now, what do you notice? 7/16 has a four instead of the three behind the decimal point. 4 is greater than 3, which means 0.4375 is greater than 0.375.
With that determined, the correct comparison is 3/8 < 7/16.
Hopefully, this helps! =)