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Answer :

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