Answers

Subtract 42/90 from 36/98

36/98 - 42/90 is -73/735.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 98 and 90 is 4410
   
   Next, find the equivalent fraction of both fractional numbers with denominator 4410
2. For the 1st fraction, since 98 × 45 = 4410,
   36/98 = 36 × 45/98 × 45 = 1620/4410
3. Likewise, for the 2nd fraction, since 90 × 49 = 4410,
   42/90 = 42 × 49/90 × 49 = 2058/4410
4. Subtract the two like fractions:
   1620/4410 - 2058/4410 = 1620 - 2058/4410 = -438/4410
5. After reducing the fraction, the answer is -73/735

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