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the fractions have different denominators
No
Before you can do that, you need to write each mixed number as an improper fraction, and then write both fractions with a common denominator. The only other choice is to write both mixed numbers as decimals, and then add them.
Convert them to improper fractions with common denominators and proceed.
Find the least common multiple. For example, if the denominators were 6 and 7, the least common multiple would be 42.
the fractions have different denominators
No
Before you can do that, you need to write each mixed number as an improper fraction, and then write both fractions with a common denominator. The only other choice is to write both mixed numbers as decimals, and then add them.
It can't be one. Mixed numbers are greater than one.
2 and two fifths
Convert them to improper fractions and proceed.
You re-scale them so that the denominators are the same.
False [ I THINK ]
the denominators
Convert them to improper fractions with common denominators and proceed.
convert both to numbers with lowest common denominator then add
Find the least common multiple. For example, if the denominators were 6 and 7, the least common multiple would be 42.