Answers

Subtract 20/63 from 15/49

15/49 - 20/63 is -5/441.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 49 and 63 is 441
   
   Next, find the equivalent fraction of both fractional numbers with denominator 441
2. For the 1st fraction, since 49 × 9 = 441,
   15/49 = 15 × 9/49 × 9 = 135/441
3. Likewise, for the 2nd fraction, since 63 × 7 = 441,
   20/63 = 20 × 7/63 × 7 = 140/441
4. Subtract the two like fractions:
   135/441 - 140/441 = 135 - 140/441 = -5/441

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