Answers

Subtract 56/98 from 15/90

15/90 - 56/98 is -17/42.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 90 and 98 is 4410
   
   Next, find the equivalent fraction of both fractional numbers with denominator 4410
2. For the 1st fraction, since 90 × 49 = 4410,
   15/90 = 15 × 49/90 × 49 = 735/4410
3. Likewise, for the 2nd fraction, since 98 × 45 = 4410,
   56/98 = 56 × 45/98 × 45 = 2520/4410
4. Subtract the two like fractions:
   735/4410 - 2520/4410 = 735 - 2520/4410 = -1785/4410
5. After reducing the fraction, the answer is -17/42

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