Subtract 90/16 from 56/15
1st number: 3 11/15, 2nd number: 5 10/16
56/15 - 90/16 is -227/120.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 16 is 240
Next, find the equivalent fraction of both fractional numbers with denominator 240 - For the 1st fraction, since 15 × 16 = 240,
56/15 = 56 × 16/15 × 16 = 896/240 - Likewise, for the 2nd fraction, since 16 × 15 = 240,
90/16 = 90 × 15/16 × 15 = 1350/240 - Subtract the two like fractions:
896/240 - 1350/240 = 896 - 1350/240 = -454/240 - After reducing the fraction, the answer is -227/120
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/30-90/16 56/15-90/32 56/45-90/16 56/15-90/48 56/75-90/16 56/15-90/80