Subtract 30/56 from 8/15
8/15 - 30/56 is -1/420.
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,
8/15 = 8 × 56/15 × 56 = 448/840 - Likewise, for the 2nd fraction, since 56 × 15 = 840,
30/56 = 30 × 15/56 × 15 = 450/840 - Subtract the two like fractions:
448/840 - 450/840 = 448 - 450/840 = -2/840 - After reducing the fraction, the answer is -1/420
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/15-30/56 8/15-60/56 8/30-30/56 24/15-30/56 8/15-90/56 8/45-30/56 40/15-30/56 8/75-30/56 56/15-30/56