Subtract 12/72 from 49/21
1st number: 2 7/21, 2nd number: 12/72
49/21 - 12/72 is 13/6.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 72 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 21 × 24 = 504,
49/21 = 49 × 24/21 × 24 = 1176/504 - Likewise, for the 2nd fraction, since 72 × 7 = 504,
12/72 = 12 × 7/72 × 7 = 84/504 - Subtract the two like fractions:
1176/504 - 84/504 = 1176 - 84/504 = 1092/504 - After reducing the fraction, the answer is 13/6
- In mixed form: 21/6
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 98/21-12/72 49/21-24/72 49/42-12/72 49/21-36/72 49/63-12/72 49/21-60/72 49/21-84/72