Answers

Subtract 54/20 from 42/98

1^st number: 42/98, 2^nd number: 2 14/20

42/98 - 54/20 is -159/70.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 98 and 20 is 980
   
   Next, find the equivalent fraction of both fractional numbers with denominator 980
2. For the 1st fraction, since 98 × 10 = 980,
   42/98 = 42 × 10/98 × 10 = 420/980
3. Likewise, for the 2nd fraction, since 20 × 49 = 980,
   54/20 = 54 × 49/20 × 49 = 2646/980
4. Subtract the two like fractions:
   420/980 - 2646/980 = 420 - 2646/980 = -2226/980
5. After reducing the fraction, the answer is -159/70

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