Subtract 49/14 from 21/30
1st number: 21/30, 2nd number: 3 7/14
21/30 - 49/14 is -14/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 14 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 30 × 7 = 210,
21/30 = 21 × 7/30 × 7 = 147/210 - Likewise, for the 2nd fraction, since 14 × 15 = 210,
49/14 = 49 × 15/14 × 15 = 735/210 - Subtract the two like fractions:
147/210 - 735/210 = 147 - 735/210 = -588/210 - After reducing the fraction, the answer is -14/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/30-49/14 21/30-98/14 21/60-49/14 21/30-49/28 63/30-49/14 21/90-49/14 21/30-49/42 21/30-49/70 21/30-49/98