Answers

Subtract 4/63 from 21/49

21/49 - 4/63 is 23/63.

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,
   21/49 = 21 × 9/49 × 9 = 189/441
3. Likewise, for the 2nd fraction, since 63 × 7 = 441,
   4/63 = 4 × 7/63 × 7 = 28/441
4. Subtract the two like fractions:
   189/441 - 28/441 = 189 - 28/441 = 161/441
5. After reducing the fraction, the answer is 23/63

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