| Find common denominators (the bottom numbers) as described above: |
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Then subtract the top numbers (the numerators): |
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| Find common denominators (the bottom numbers) as described above, and write the equation as a subtraction problem: |
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We can't subtract six-tenths from five-tenths, so we need to borrow from the 4 and add it to the five-tenths. Notice that borrowing one from the 4 is the same as borrowing ten-tenths so that we can add it to the five-tenths: |
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Now we can do the subtraction: |
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