Answers

Subtract 21/64 from 8/98

8/98 - 21/64 is -773/3136.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 98 and 64 is 3136
   
   Next, find the equivalent fraction of both fractional numbers with denominator 3136
2. For the 1st fraction, since 98 × 32 = 3136,
   8/98 = 8 × 32/98 × 32 = 256/3136
3. Likewise, for the 2nd fraction, since 64 × 49 = 3136,
   21/64 = 21 × 49/64 × 49 = 1029/3136
4. Subtract the two like fractions:
   256/3136 - 1029/3136 = 256 - 1029/3136 = -773/3136

MathStep (Works offline)

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

Related: ¹⁶/₉₈-²¹/₆₄ ⁸/₉₈-⁴²/₆₄ ²⁴/₉₈-²¹/₆₄ ⁸/₉₈-⁶³/₆₄ ⁴⁰/₉₈-²¹/₆₄ ⁵⁶/₉₈-²¹/₆₄

Subtract Fractions Calculator