Subtract 10/70 from 81/50
1st number: 1 31/50, 2nd number: 10/70
81/50 - 10/70 is 517/350.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 50 and 70 is 350
Next, find the equivalent fraction of both fractional numbers with denominator 350 - For the 1st fraction, since 50 × 7 = 350,
81/50 = 81 × 7/50 × 7 = 567/350 - Likewise, for the 2nd fraction, since 70 × 5 = 350,
10/70 = 10 × 5/70 × 5 = 50/350 - Subtract the two like fractions:
567/350 - 50/350 = 567 - 50/350 = 517/350 - In mixed form: 1167/350
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/50-20/70 81/50-30/70 81/50-50/70