Subtract 81/30 from 4/14
1st number: 4/14, 2nd number: 2 21/30
4/14 - 81/30 is -169/70.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 14 and 30 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 14 × 15 = 210,
4/14 = 4 × 15/14 × 15 = 60/210 - Likewise, for the 2nd fraction, since 30 × 7 = 210,
81/30 = 81 × 7/30 × 7 = 567/210 - Subtract the two like fractions:
60/210 - 567/210 = 60 - 567/210 = -507/210 - After reducing the fraction, the answer is -169/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/14-81/30 4/28-81/30 4/14-81/60 12/14-81/30 4/42-81/30 4/14-81/90 20/14-81/30 4/70-81/30 28/14-81/30 4/98-81/30