Subtract 18/56 from 4/15
4/15 - 18/56 is -23/420.
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,
4/15 = 4 × 56/15 × 56 = 224/840 - Likewise, for the 2nd fraction, since 56 × 15 = 840,
18/56 = 18 × 15/56 × 15 = 270/840 - Subtract the two like fractions:
224/840 - 270/840 = 224 - 270/840 = -46/840 - After reducing the fraction, the answer is -23/420
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/15-18/56 4/15-36/56 4/30-18/56 12/15-18/56 4/15-54/56 4/45-18/56 20/15-18/56 4/15-90/56 4/75-18/56 28/15-18/56