Subtract 15/42 from 56/30
1st number: 1 26/30, 2nd number: 15/42
56/30 - 15/42 is 317/210.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 42 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 30 × 7 = 210,
56/30 = 56 × 7/30 × 7 = 392/210 - Likewise, for the 2nd fraction, since 42 × 5 = 210,
15/42 = 15 × 5/42 × 5 = 75/210 - Subtract the two like fractions:
392/210 - 75/210 = 392 - 75/210 = 317/210 - In mixed form: 1107/210
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/30-30/42 56/60-15/42 56/30-15/84 56/30-45/42 56/90-15/42 56/30-75/42