The easiest way to compare fractions is by having a common denominator for both fractions.
This is because, when the denominator is the same in both fractions, we will simply compare the numerators and the greater fraction will be the one having greater numerator
<u><em>Part 1:</em></u>
The first given fraction is 
The second given fraction is 
We can make the denominator in the second one equal to 12 by multiplying it by 4.
However, to preserve the value of the fraction, we will multiply it by 
This will give us:
*
= 
Now, the two fractions became
and 
The denominator is the same, so we will compare numerators.
Since 7 is greater than 4, therefore:
is the greater fraction
<u><em>Part 2:</em></u>
The first given fraction is 
The second given fraction is 
We can make the denominator in the second one equal to 12 by multiplying it by 4.
However, to preserve the value of the fraction, we will multiply it by 
This will give us:
*
= 
Now, the two fractions became
and 
The denominator is the same, so we will compare numerators.
Since 8 is greater than 7, therefore:
is the greater fraction
Hope this helps :)