Skill 31 Add and Subtract Fractions, Mixed Numbers, and Decimals
Now that you understand mixed numbers and decimals, let’s start using them in mathematical operations.
Add and Subtract Fractions with Different Denominators. Add 
and 
Adding fractions with different denominators is like mixing apples and oranges. Before you can add them, you need to rewrite one or both fractions so that they both have the same denominator. You can change to now ...
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