Subtract 81/56 from 6/15
1st number: 6/15, 2nd number: 1 25/56
6/15 - 81/56 is -293/280.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 56 is 840
Next, find the equivalent fraction of both fractional numbers with denominator 840 - For the 1st fraction, since 15 × 56 = 840,
6/15 = 6 × 56/15 × 56 = 336/840 - Likewise, for the 2nd fraction, since 56 × 15 = 840,
81/56 = 81 × 15/56 × 15 = 1215/840 - Subtract the two like fractions:
336/840 - 1215/840 = 336 - 1215/840 = -879/840 - After reducing the fraction, the answer is -293/280
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 12/15-81/56 6/30-81/56 18/15-81/56 6/45-81/56 30/15-81/56 6/75-81/56 42/15-81/56