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Add fractions with different denominators

Work out the sum. First find a common denominator.
12
+
13
=

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In this exercise you add two fractions with different denominators. The recipe is always the same: find a common denominator (easiest by multiplying the two denominators), convert each fraction to that denominator, and only then add the numerators. Any equivalent fraction is accepted as the answer.

What does this generator do?

Picks two fractions with small, different denominators and asks for their sum.

How to use it

Find the lowest common denominator (or just multiply the denominators). Convert each fraction to that denominator and add the numerators. Any equivalent fraction is accepted as the answer.