Answers

Subtract 63/60 from 21/98

1^st number: 21/98, 2^nd number: 1 3/60

21/98 - 63/60 is -117/140.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 98 and 60 is 2940
   
   Next, find the equivalent fraction of both fractional numbers with denominator 2940
2. For the 1st fraction, since 98 × 30 = 2940,
   21/98 = 21 × 30/98 × 30 = 630/2940
3. Likewise, for the 2nd fraction, since 60 × 49 = 2940,
   63/60 = 63 × 49/60 × 49 = 3087/2940
4. Subtract the two like fractions:
   630/2940 - 3087/2940 = 630 - 3087/2940 = -2457/2940
5. After reducing the fraction, the answer is -117/140

MathStep (Works offline)

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

Related: ⁴²/₉₈-⁶³/₆₀ ⁶³/₉₈-⁶³/₆₀

Subtract Fractions Calculator