Answers

Subtract 63/98 from 18/64

18/64 - 63/98 is -81/224.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 64 and 98 is 3136
   
   Next, find the equivalent fraction of both fractional numbers with denominator 3136
2. For the 1st fraction, since 64 × 49 = 3136,
   18/64 = 18 × 49/64 × 49 = 882/3136
3. Likewise, for the 2nd fraction, since 98 × 32 = 3136,
   63/98 = 63 × 32/98 × 32 = 2016/3136
4. Subtract the two like fractions:
   882/3136 - 2016/3136 = 882 - 2016/3136 = -1134/3136
5. After reducing the fraction, the answer is -81/224

MathStep (Works offline)

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

Related: ³⁶/₆₄-⁶³/₉₈ ⁵⁴/₆₄-⁶³/₉₈ ⁹⁰/₆₄-⁶³/₉₈

Subtract Fractions Calculator