Answers

Subtract 45/21 from 7/36

1^st number: 7/36, 2^nd number: 2 3/21

7/36 - 45/21 is -491/252.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 36 and 21 is 252
   
   Next, find the equivalent fraction of both fractional numbers with denominator 252
2. For the 1st fraction, since 36 × 7 = 252,
   7/36 = 7 × 7/36 × 7 = 49/252
3. Likewise, for the 2nd fraction, since 21 × 12 = 252,
   45/21 = 45 × 12/21 × 12 = 540/252
4. Subtract the two like fractions:
   49/252 - 540/252 = 49 - 540/252 = -491/252

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