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How do you add and subtract unlike denominators?
you make them have like denominators by multiplying so many times that they have the same denominators or you can make them have like denominators by multiplying the two
How do you compare fractions without common denominators?
Make them into decimals. Make them into decimals.
How do you compare improper fractions with larger numerators than denominators?
The same way as proper fractions. Make sure the denominators are the same. If they're not, convert them to equivalent fractions with similar denominators. Then you can see which numerator is greater.
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.
How do you subtract improper fractions with different denominators?
It's the same thing as adding or subtracting normal fractions - just make sure both fractions have the same denominators (by either multiplying the denominators or simplifying the fraction - whichever the question needs).
