Subtract 3/15 from 9/56
9/56 - 3/15 is -11/280.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 15 is 840
Next, find the equivalent fraction of both fractional numbers with denominator 840 - For the 1st fraction, since 56 × 15 = 840,
9/56 = 9 × 15/56 × 15 = 135/840 - Likewise, for the 2nd fraction, since 15 × 56 = 840,
3/15 = 3 × 56/15 × 56 = 168/840 - Subtract the two like fractions:
135/840 - 168/840 = 135 - 168/840 = -33/840 - After reducing the fraction, the answer is -11/280
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/56-3/15 9/56-6/15 9/56-3/30 27/56-3/15 9/56-9/15 9/56-3/45 45/56-3/15 9/56-3/75 63/56-3/15 9/56-21/15