Answers

Subtract 49/40 from 21/98

1^st number: 21/98, 2^nd number: 1 9/40

21/98 - 49/40 is -283/280.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 98 and 40 is 1960
   
   Next, find the equivalent fraction of both fractional numbers with denominator 1960
2. For the 1st fraction, since 98 × 20 = 1960,
   21/98 = 21 × 20/98 × 20 = 420/1960
3. Likewise, for the 2nd fraction, since 40 × 49 = 1960,
   49/40 = 49 × 49/40 × 49 = 2401/1960
4. Subtract the two like fractions:
   420/1960 - 2401/1960 = 420 - 2401/1960 = -1981/1960
5. After reducing the fraction, the answer is -283/280

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