Answers

Subtract 32/72 from 21/28

21/28 - 32/72 is 11/36.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 28 and 72 is 504
   
   Next, find the equivalent fraction of both fractional numbers with denominator 504
2. For the 1st fraction, since 28 × 18 = 504,
   21/28 = 21 × 18/28 × 18 = 378/504
3. Likewise, for the 2nd fraction, since 72 × 7 = 504,
   32/72 = 32 × 7/72 × 7 = 224/504
4. Subtract the two like fractions:
   378/504 - 224/504 = 378 - 224/504 = 154/504
5. After reducing the fraction, the answer is 11/36

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