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7 over 9 minus 3 over 7?

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First we need to convert to the same type, giving us 49 over 63 minus 27 over 63, giving us 22 over 63.
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What is 13 and 1 over 3 minus 7 and 7 over 9?

13 and 1/3 - 7 and 7/9 in improper fractions is 40/3 - 70/9 You can get the same denominator by multiplying the first fraction top and bottom by 3 120/9-70/9 =50/9 As a mixed