Subtract 36/30 from 21/14
1st number: 1 7/14, 2nd number: 1 6/30
21/14 - 36/30 is 3/10.
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,
21/14 = 21 × 15/14 × 15 = 315/210 - Likewise, for the 2nd fraction, since 30 × 7 = 210,
36/30 = 36 × 7/30 × 7 = 252/210 - Subtract the two like fractions:
315/210 - 252/210 = 315 - 252/210 = 63/210 - After reducing the fraction, the answer is 3/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/14-36/30 21/14-72/30 21/28-36/30 21/14-36/60 63/14-36/30 21/42-36/30 21/14-36/90 21/70-36/30 21/98-36/30