Subtract 49/63 from 18/15, Solve 1 3/15

Subtract 49/63 from 18/15

1^st number: 1 3/15, 2^nd number: 49/63

18/15 - 49/63 is 19/45.

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,
18/15 = 18 × 21/15 × 21 = 378/315
Likewise, for the 2nd fraction, since 63 × 5 = 315,
49/63 = 49 × 5/63 × 5 = 245/315
Subtract the two like fractions:
378/315 - 245/315 = 378 - 245/315 = 133/315
After reducing the fraction, the answer is 19/45

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