Khan Academy

Supporting grades: 5

Description: Sal subtracts 17 4/9 - 12 2/3. So what I'm going to do is I'm going to rewrite these mixed numbers. So I'm going to write this as 17 and 4/9 minus 12 and 2/3. Let me make it very clear, we are subtracting 12 and 2/3 from 17 and 4/9.

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