Answers

Subtract 56/98 from 15/72

15/72 - 56/98 is -61/168.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 72 and 98 is 3528
   
   Next, find the equivalent fraction of both fractional numbers with denominator 3528
2. For the 1st fraction, since 72 × 49 = 3528,
   15/72 = 15 × 49/72 × 49 = 735/3528
3. Likewise, for the 2nd fraction, since 98 × 36 = 3528,
   56/98 = 56 × 36/98 × 36 = 2016/3528
4. Subtract the two like fractions:
   735/3528 - 2016/3528 = 735 - 2016/3528 = -1281/3528
5. After reducing the fraction, the answer is -61/168

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