Subtract 14/63 from 18/15, Solve 1 3/15

Subtract 14/63 from 18/15

1^st number: 1 3/15, 2^nd number: 14/63

18/15 - 14/63 is 44/45.

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,
14/63 = 14 × 5/63 × 5 = 70/315
Subtract the two like fractions:
378/315 - 70/315 = 378 - 70/315 = 308/315
After reducing the fraction, the answer is 44/45

MathStep (Works offline)

Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad