Subtract 20/49 from 21/3
1st number: 7 0/3, 2nd number: 20/49
21/3 - 20/49 is 323/49.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 49 is 147
Next, find the equivalent fraction of both fractional numbers with denominator 147 - For the 1st fraction, since 3 × 49 = 147,
21/3 = 21 × 49/3 × 49 = 1029/147 - Likewise, for the 2nd fraction, since 49 × 3 = 147,
20/49 = 20 × 3/49 × 3 = 60/147 - Subtract the two like fractions:
1029/147 - 60/147 = 1029 - 60/147 = 969/147 - After reducing the fraction, the answer is 323/49
- In mixed form: 629/49
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/3-20/49 21/3-40/49 21/6-20/49 21/3-20/98 63/3-20/49 21/3-60/49 21/9-20/49 21/15-20/49