Subtract 9/81 from 63/7, Solve 9 0/7

Subtract 9/81 from 63/7

1^st number: 9 0/7, 2^nd number: 9/81

63/7 - 9/81 is 80/9.

Find the least common denominator or LCM of the two denominators:
LCM of 7 and 81 is 567

Next, find the equivalent fraction of both fractional numbers with denominator 567
For the 1st fraction, since 7 × 81 = 567,
63/7 = 63 × 81/7 × 81 = 5103/567
Likewise, for the 2nd fraction, since 81 × 7 = 567,
9/81 = 9 × 7/81 × 7 = 63/567
Subtract the two like fractions:
5103/567 - 63/567 = 5103 - 63/567 = 5040/567
After reducing the fraction, the answer is 80/9
In mixed form: 88/9

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