Answers

Subtract 40/98 from 21/36

21/36 - 40/98 is 103/588.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 36 and 98 is 1764
   
   Next, find the equivalent fraction of both fractional numbers with denominator 1764
2. For the 1st fraction, since 36 × 49 = 1764,
   21/36 = 21 × 49/36 × 49 = 1029/1764
3. Likewise, for the 2nd fraction, since 98 × 18 = 1764,
   40/98 = 40 × 18/98 × 18 = 720/1764
4. Subtract the two like fractions:
   1029/1764 - 720/1764 = 1029 - 720/1764 = 309/1764
5. After reducing the fraction, the answer is 103/588

MathStep (Works offline)

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

Related: ⁴²/₃₆-⁴⁰/₉₈ ²¹/₃₆-⁸⁰/₉₈ ²¹/₇₂-⁴⁰/₉₈ ⁶³/₃₆-⁴⁰/₉₈

Subtract Fractions Calculator