Answers

Subtract 21/75 from 18/98

18/98 - 21/75 is -118/1225.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 98 and 75 is 7350
   
   Next, find the equivalent fraction of both fractional numbers with denominator 7350
2. For the 1st fraction, since 98 × 75 = 7350,
   18/98 = 18 × 75/98 × 75 = 1350/7350
3. Likewise, for the 2nd fraction, since 75 × 98 = 7350,
   21/75 = 21 × 98/75 × 98 = 2058/7350
4. Subtract the two like fractions:
   1350/7350 - 2058/7350 = 1350 - 2058/7350 = -708/7350
5. After reducing the fraction, the answer is -118/1225

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