Subtract 3/21 from 30/14
1st number: 2 2/14, 2nd number: 3/21
30/14 - 3/21 is 2/1.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 14 and 21 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 14 × 3 = 42,
30/14 = 30 × 3/14 × 3 = 90/42 - Likewise, for the 2nd fraction, since 21 × 2 = 42,
3/21 = 3 × 2/21 × 2 = 6/42 - Subtract the two like fractions:
90/42 - 6/42 = 90 - 6/42 = 84/42 - After reducing the fraction, the answer is 2/1
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/14-3/21 30/14-6/21 30/28-3/21 30/14-3/42 90/14-3/21 30/14-9/21 30/42-3/21 30/14-3/63 30/14-15/21 30/70-3/21 30/98-3/21