Answer:
4 3/20
Step-by-step explanation:
make both fractions top heavy
12/5 and 7/4
find the lowest common multiple of 5 and 4 = 20
switch all the denominators to 20 and multiply numerators accordingly
you now have 83/20
83 is prime so the fraction cannot be simplified
switch the fraction to a mixed number to get 4 3/20
20 is not wholely divisible by 3 so the fraction cannot be further simplified
