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Earn +20 ptsQ: How do you find unknown denominators?
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How can you get a dcommon denominator?
You can multiply the two denominators, or you can find the least common multiple for the two denominators.
How will you find the value of the unknown in a given rational equation?
Try to cross multiply if possible or set the denominators equal to each other Cross multiplying is when a/b = c/d Which is equal to ad = bc
How do you find the leaset common denominator?
By finding the lowest common multiple of the different denominators then rearranging the numerators and denominators accordingly.
When you subtract fractions do you subtract the denominator?
No. If the denominators are the same, you subtract the numerators. If the denominators are different you have to find the least common denominator.
How do you add if the numerators are the same and the denominators are different?
You have to make the fractions equivalent, which means you need to find the lowest common factor that goes into both the denominators.
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