Answers

Subtract 15/49 from 6/21

6/21 - 15/49 is -1/49.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 21 and 49 is 147
   
   Next, find the equivalent fraction of both fractional numbers with denominator 147
2. For the 1st fraction, since 21 × 7 = 147,
   6/21 = 6 × 7/21 × 7 = 42/147
3. Likewise, for the 2nd fraction, since 49 × 3 = 147,
   15/49 = 15 × 3/49 × 3 = 45/147
4. Subtract the two like fractions:
   42/147 - 45/147 = 42 - 45/147 = -3/147
5. After reducing the fraction, the answer is -1/49

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