Answers

Subtract 20/49 from 15/28

15/28 - 20/49 is 25/196.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 28 and 49 is 196
   
   Next, find the equivalent fraction of both fractional numbers with denominator 196
2. For the 1st fraction, since 28 × 7 = 196,
   15/28 = 15 × 7/28 × 7 = 105/196
3. Likewise, for the 2nd fraction, since 49 × 4 = 196,
   20/49 = 20 × 4/49 × 4 = 80/196
4. Subtract the two like fractions:
   105/196 - 80/196 = 105 - 80/196 = 25/196

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