Answers

Subtract 21/42 from 6/98

6/98 - 21/42 is -43/98.

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,
   6/98 = 6 × 3/98 × 3 = 18/294
3. Likewise, for the 2nd fraction, since 42 × 7 = 294,
   21/42 = 21 × 7/42 × 7 = 147/294
4. Subtract the two like fractions:
   18/294 - 147/294 = 18 - 147/294 = -129/294
5. After reducing the fraction, the answer is -43/98

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