Answers

Subtract 50/49 from 81/72

1^st number: 1 9/72, 2^nd number: 1 1/49

81/72 - 50/49 is 41/392.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 72 and 49 is 3528
   
   Next, find the equivalent fraction of both fractional numbers with denominator 3528
2. For the 1st fraction, since 72 × 49 = 3528,
   81/72 = 81 × 49/72 × 49 = 3969/3528
3. Likewise, for the 2nd fraction, since 49 × 72 = 3528,
   50/49 = 50 × 72/49 × 72 = 3600/3528
4. Subtract the two like fractions:
   3969/3528 - 3600/3528 = 3969 - 3600/3528 = 369/3528
5. After reducing the fraction, the answer is 41/392

MathStep (Works offline)

Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad

Related: ⁸¹/₇₂-⁵⁰/₉₈

Subtract Fractions Calculator