Answers

Subtract 20/63 from 7/15

7/15 - 20/63 is 47/315.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 15 and 63 is 315
   
   Next, find the equivalent fraction of both fractional numbers with denominator 315
2. For the 1st fraction, since 15 × 21 = 315,
   7/15 = 7 × 21/15 × 21 = 147/315
3. Likewise, for the 2nd fraction, since 63 × 5 = 315,
   20/63 = 20 × 5/63 × 5 = 100/315
4. Subtract the two like fractions:
   147/315 - 100/315 = 147 - 100/315 = 47/315

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