Subtract 81/70 from 4/10
1st number: 4/10, 2nd number: 1 11/70
4/10 - 81/70 is -53/70.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 70 is 70
Next, find the equivalent fraction of both fractional numbers with denominator 70 - For the 1st fraction, since 10 × 7 = 70,
4/10 = 4 × 7/10 × 7 = 28/70 - Likewise, for the 2nd fraction, since 70 × 1 = 70,
81/70 = 81 × 1/70 × 1 = 81/70 - Subtract the two like fractions:
28/70 - 81/70 = 28 - 81/70 = -53/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/10-81/70 4/20-81/70 12/10-81/70 4/30-81/70 20/10-81/70 4/50-81/70 28/10-81/70 4/70-81/70