140k views
2 votes
What's the difference of 3/4 and 1/28

1 Answer

5 votes
Find the LCD 4 and 28 :

Factor each denominator into its primes :

4 = 2²
28 = 2² * 7

Find the least common denominator 2² * 7 = 28

LCD = 28


(3)/(4) - (1)/(28)

Adjust fractions based on the LCD :


(3*7)/(28) - (1)/(28)


(3*7-1)/(28)


= (20)/(28)

Cancel common factor 4 :


(20/4)/(28/4)


= (5)/(7)

hope this helps!


User John J Smith
by
8.8k points

No related questions found

Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

9.4m questions

12.2m answers

Categories