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# How to Find Common Denominators - Elementary Math Help

How to Find Common Denominators If you are trying to add or subtract fractions with different denominators, you’ve come to the right place! In order to add or subtract fractions, we have to have common denominators. Sometimes, though, you’re given a problem that looks like this: Those are definitely not common denominators! In order to get the denominators the same, follow... read more

# Expanding Fractions, Reducing Fractions - Elementary Math Help

Expanding and Reducing Fractions Two things you might be asked to do are expand and reduce (or simplify) fractions. Expanding a fraction means making it "bigger" while reducing a fraction means making it "smaller." Expanding Fractions Expanding fractions means making them "bigger." For example, let's say you ate 3/8 of that pizza, but your friend wanted to know how many sixteenths... read more

# 6/(x+4) - 2/(x-3) = 3

used lowest common denominator to find x

# Help with fractions that contain exponents, factoring and LCD?

I have three problems that I can't completely figure.  I appreciate any help and explanations!       17        -    6   x2-12x+35     ...

# Adding fractions by finding the LCD?

I can't seem to get past this problem...   2x   +     5      3x         x-8   For...

# how to compare fractions by finding common denominator

Using the LCD to write equivalent fractions.  then compare using <>or =