Subtract 32/21 from 1/15
1st number: 1/15, 2nd number: 1 11/21
1/15 - 32/21 is -51/35.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 21 is 105
Next, find the equivalent fraction of both fractional numbers with denominator 105 - For the 1st fraction, since 15 × 7 = 105,
1/15 = 1 × 7/15 × 7 = 7/105 - Likewise, for the 2nd fraction, since 21 × 5 = 105,
32/21 = 32 × 5/21 × 5 = 160/105 - Subtract the two like fractions:
7/105 - 160/105 = 7 - 160/105 = -153/105 - After reducing the fraction, the answer is -51/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/15-32/21 1/15-64/21 1/30-32/21 1/15-32/42 3/15-32/21 1/15-96/21 1/45-32/21 1/15-32/63 5/15-32/21 1/75-32/21 7/15-32/21