Subtract 49/90 from 3/56
3/56 - 49/90 is -1237/2520.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 90 is 2520
Next, find the equivalent fraction of both fractional numbers with denominator 2520 - For the 1st fraction, since 56 × 45 = 2520,
3/56 = 3 × 45/56 × 45 = 135/2520 - Likewise, for the 2nd fraction, since 90 × 28 = 2520,
49/90 = 49 × 28/90 × 28 = 1372/2520 - Subtract the two like fractions:
135/2520 - 1372/2520 = 135 - 1372/2520 = -1237/2520
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/56-49/90 3/56-98/90 9/56-49/90 15/56-49/90 21/56-49/90