Subtract 15/7 from 30/10
1st number: 3 0/10, 2nd number: 2 1/7
30/10 - 15/7 is 6/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 7 is 70
Next, find the equivalent fraction of both fractional numbers with denominator 70 - For the 1st fraction, since 10 × 7 = 70,
30/10 = 30 × 7/10 × 7 = 210/70 - Likewise, for the 2nd fraction, since 7 × 10 = 70,
15/7 = 15 × 10/7 × 10 = 150/70 - Subtract the two like fractions:
210/70 - 150/70 = 210 - 150/70 = 60/70 - After reducing the fraction, the answer is 6/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/10-15/7 30/10-30/7 30/20-15/7 30/10-15/14 90/10-15/7 30/10-45/7 30/10-15/21 30/10-75/7 30/50-15/7 30/10-15/35 30/70-15/7 30/10-15/49