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### Course: MAP Recommended Practice>Unit 34

Lesson 14: Common denominators

# Common denominators: 3/5 and 7/2

Learn how to rewrite fractions with different denominators as equivalent fractions with a common denominator. Watch how to visually represent this process and apply it to solve problems.

## Want to join the conversation?

• how can you find common denomenators in really huge fractions like 5/101 and 6/500
• It's the exact same process with finding the greatest common denominator and everything. Except, for the numbers 101 AND 500 like you mentioned in your example fractions you might find yourself having to multiply the two numbers together in order to find the common denominator. So you would multiply: `101*500` which ends up equaling `50500`. That would be the common denominator.
• What are common fractions and least common fractions?
• And common fractions are the answers or multiple which is in both numbers
• what if the fraction is a mix number
• You turn it back into a improper fraction. For example, 2 1/3. You multiply the whole number and the denominator, which in this case would be 2 x 3. That equals 6. Then, add that on to the numerator. The numerator is 1, so you add 6+1. That equals 7, so that is the numerator of the improper fraction. The denominator always stays the same, so the improper fraction of 2 1/3 is 7/3.
• what is 1/2-1/5
• 3/10
(1 vote)
• is 3/5+2/6=10/18
• No, 3/5+2/6 = 3/5+1/3 = 9/15+5/15 = 14/15.

Have a blessed, wonderful day!
• so 7/2 would be 14/4?
(im asking this half way through the video btw)
• what are benchmark fractions?
• A benchmark fraction is a fraction we can easily see in our head like 1/2
• Honestly what's​ the difference between a factor and a multiple?
• A factor is a number that leaves no remainder behind after it divides the specific number. On the contrary, multiple is a number reached by multiplying a given number by another. While factors of a number are are finite, multiples are infinite.
• What is the l c m of3/5,3/10,9/5