Subtract 90/56 from 15/16
1st number: 15/16, 2nd number: 1 34/56
15/16 - 90/56 is -75/112.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 16 and 56 is 112
Next, find the equivalent fraction of both fractional numbers with denominator 112 - For the 1st fraction, since 16 × 7 = 112,
15/16 = 15 × 7/16 × 7 = 105/112 - Likewise, for the 2nd fraction, since 56 × 2 = 112,
90/56 = 90 × 2/56 × 2 = 180/112 - Subtract the two like fractions:
105/112 - 180/112 = 105 - 180/112 = -75/112
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/16-90/56 15/32-90/56 45/16-90/56 15/48-90/56 75/16-90/56 15/80-90/56