Subtract 21/63 from 27/15, Solve 1 12/15

Subtract 21/63 from 27/15

1^st number: 1 12/15, 2^nd number: 21/63

27/15 - 21/63 is 22/15.

Find the least common denominator or LCM of the two denominators:
LCM of 15 and 63 is 315

Next, find the equivalent fraction of both fractional numbers with denominator 315
For the 1st fraction, since 15 × 21 = 315,
27/15 = 27 × 21/15 × 21 = 567/315
Likewise, for the 2nd fraction, since 63 × 5 = 315,
21/63 = 21 × 5/63 × 5 = 105/315
Subtract the two like fractions:
567/315 - 105/315 = 567 - 105/315 = 462/315
After reducing the fraction, the answer is 22/15
In mixed form: 17/15

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