answersLogoWhite

0


Best Answer

Take 8/9, you can multiply the numerator and denominator of a fraction by the same number and the value of the fraction does not change. Let's multiply the numerator and denominator by 4. Why 4? It will become apparent with practice. But let's proceed. So now the fraction is 32/36.

Now let's multiply the numerator and denominator of the second fraction by 3. Why 3? It will become apparent with practice. But let's proceed. So the fraction becomes 21/36.

The idea is to select the numbers such that the denominators of the fractions yield the same number, in our case 36. There are other numbers that you can multiply with to get different common denominators values like 72, 108 etc. 36 is the least number. The process of finding the least number that is evenly divisible by the denominators of the two fractions is called finding the LCM (least common multiplier)

If the denominators of any number of fractions is the same the numerators can be added. Thus in our case we have 32/36 and 21/36. You can add these two fractions to get 53/36 and that is the answer.

User Avatar

Wiki User

12y ago
This answer is:
User Avatar

Add your answer:

Earn +20 pts
Q: What is the fraction 8 over 9 plus 7 over 12?
Write your answer...
Submit
Still have questions?
magnify glass
imp