Subtract 42/72 from 56/15
1st number: 3 11/15, 2nd number: 42/72
56/15 - 42/72 is 63/20.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 72 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 15 × 24 = 360,
56/15 = 56 × 24/15 × 24 = 1344/360 - Likewise, for the 2nd fraction, since 72 × 5 = 360,
42/72 = 42 × 5/72 × 5 = 210/360 - Subtract the two like fractions:
1344/360 - 210/360 = 1344 - 210/360 = 1134/360 - After reducing the fraction, the answer is 63/20
- In mixed form: 33/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/15-84/72 56/30-42/72 56/45-42/72 56/75-42/72