Answers

Subtract 21/72 from 63/56

1^st number: 1 7/56, 2^nd number: 21/72

63/56 - 21/72 is 5/6.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 56 and 72 is 504
   
   Next, find the equivalent fraction of both fractional numbers with denominator 504
2. For the 1st fraction, since 56 × 9 = 504,
   63/56 = 63 × 9/56 × 9 = 567/504
3. Likewise, for the 2nd fraction, since 72 × 7 = 504,
   21/72 = 21 × 7/72 × 7 = 147/504
4. Subtract the two like fractions:
   567/504 - 147/504 = 567 - 147/504 = 420/504
5. After reducing the fraction, the answer is 5/6

MathStep (Works offline)

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

Related: ⁶³/₅₆-⁴²/₇₂ ⁶³/₅₆-⁶³/₇₂

Subtract Fractions Calculator