Subtract 6/63 from 81/10, Solve 8 1/10

Subtract 6/63 from 81/10

1^st number: 8 1/10, 2^nd number: 6/63

81/10 - 6/63 is 1681/210.

Find the least common denominator or LCM of the two denominators:
LCM of 10 and 63 is 630

Next, find the equivalent fraction of both fractional numbers with denominator 630
For the 1st fraction, since 10 × 63 = 630,
81/10 = 81 × 63/10 × 63 = 5103/630
Likewise, for the 2nd fraction, since 63 × 10 = 630,
6/63 = 6 × 10/63 × 10 = 60/630
Subtract the two like fractions:
5103/630 - 60/630 = 5103 - 60/630 = 5043/630
After reducing the fraction, the answer is 1681/210
In mixed form: 81/210

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