Answers

Subtract 20/21 from 15/32

15/32 - 20/21 is -325/672.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 32 and 21 is 672
   
   Next, find the equivalent fraction of both fractional numbers with denominator 672
2. For the 1st fraction, since 32 × 21 = 672,
   15/32 = 15 × 21/32 × 21 = 315/672
3. Likewise, for the 2nd fraction, since 21 × 32 = 672,
   20/21 = 20 × 32/21 × 32 = 640/672
4. Subtract the two like fractions:
   315/672 - 640/672 = 315 - 640/672 = -325/672

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