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just change the fration with the smallest denominator and add or subtract the way you always do.

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Q: How do you add and subtract mixed numbers with unlike denominators?

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the fractions have different denominators

Convert them to improper fractions and proceed.

Convert them to improper fractions with common denominators and proceed.

SUBTRACTION: You first turn both mixed numbers into improper fractions. If needed, change the denominators into like denominators. Next, subtract the two improper fractions and reduce if necessary. ADDITION: If needed, turn denominators so they are the same number. Next, add and reduce if necessary.

First you would want to change the mixed number to an improper fraction. Then you can subtract

Convert them to improper fractions with common denominators and proceed normally.

First convert the mixed numbers into "top heavy (or "improper) fractions". Now multiply each of the improper fractions by each other - this makes the denominators the same. Now you can add both the fractions together (and cancel down if necessary).

subtract a mixed fractor for a fifth grader

No

change the mixed # into a fraction

You can either subtract the whole number portions, then subtract the numerators, or you can convert the mixed numbers to improper fractions, subtract the numerators, and simplify. For example, 3 5/7 - 2 1/7 can be handled as 3 - 2 and 5/7 - 1/7, or as 26/7 - 15/7; either way, it's 1 4/7.

you would convert the mixed numbers into fractions where the top number is greater than the bottom number, then multiply both the numerator and the denominator by a number that makes the denominators the same.

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