Subtract 7/30 from 15/56
15/56 - 7/30 is 29/840.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 30 is 840
Next, find the equivalent fraction of both fractional numbers with denominator 840 - For the 1st fraction, since 56 × 15 = 840,
15/56 = 15 × 15/56 × 15 = 225/840 - Likewise, for the 2nd fraction, since 30 × 28 = 840,
7/30 = 7 × 28/30 × 28 = 196/840 - Subtract the two like fractions:
225/840 - 196/840 = 225 - 196/840 = 29/840
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/56-7/30 15/56-14/30 15/56-7/60 45/56-7/30 15/56-21/30 15/56-7/90 75/56-7/30 15/56-35/30 15/56-49/30