Subtract 20/56 from 54/15
1st number: 3 9/15, 2nd number: 20/56
54/15 - 20/56 is 227/70.
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,
54/15 = 54 × 56/15 × 56 = 3024/840 - Likewise, for the 2nd fraction, since 56 × 15 = 840,
20/56 = 20 × 15/56 × 15 = 300/840 - Subtract the two like fractions:
3024/840 - 300/840 = 3024 - 300/840 = 2724/840 - After reducing the fraction, the answer is 227/70
- In mixed form: 317/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/15-40/56 54/30-20/56 54/15-60/56 54/45-20/56 54/75-20/56