Answers

Subtract 16/42 from 21/98

21/98 - 16/42 is -1/6.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 98 and 42 is 294
   
   Next, find the equivalent fraction of both fractional numbers with denominator 294
2. For the 1st fraction, since 98 × 3 = 294,
   21/98 = 21 × 3/98 × 3 = 63/294
3. Likewise, for the 2nd fraction, since 42 × 7 = 294,
   16/42 = 16 × 7/42 × 7 = 112/294
4. Subtract the two like fractions:
   63/294 - 112/294 = 63 - 112/294 = -49/294
5. After reducing the fraction, the answer is -1/6

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