Subtract 18/56 from 15/9
1st number: 1 6/9, 2nd number: 18/56
15/9 - 18/56 is 113/84.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 56 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 9 × 56 = 504,
15/9 = 15 × 56/9 × 56 = 840/504 - Likewise, for the 2nd fraction, since 56 × 9 = 504,
18/56 = 18 × 9/56 × 9 = 162/504 - Subtract the two like fractions:
840/504 - 162/504 = 840 - 162/504 = 678/504 - After reducing the fraction, the answer is 113/84
- In mixed form: 129/84
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/9-18/56 15/9-36/56 15/18-18/56 45/9-18/56 15/9-54/56 15/27-18/56 75/9-18/56 15/9-90/56 15/45-18/56 15/63-18/56