Answers

Subtract 32/63 from 21/56

21/56 - 32/63 is -67/504.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 56 and 63 is 504
   
   Next, find the equivalent fraction of both fractional numbers with denominator 504
2. For the 1st fraction, since 56 × 9 = 504,
   21/56 = 21 × 9/56 × 9 = 189/504
3. Likewise, for the 2nd fraction, since 63 × 8 = 504,
   32/63 = 32 × 8/63 × 8 = 256/504
4. Subtract the two like fractions:
   189/504 - 256/504 = 189 - 256/504 = -67/504

MathStep (Works offline)

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

Related: ⁴²/₅₆-³²/₆₃ ²¹/₅₆-⁶⁴/₆₃ ⁶³/₅₆-³²/₆₃ ²¹/₅₆-⁹⁶/₆₃

Subtract Fractions Calculator