Answers

Subtract 81/49 from 40/21

1^st number: 1 19/21, 2^nd number: 1 32/49

40/21 - 81/49 is 37/147.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 21 and 49 is 147
   
   Next, find the equivalent fraction of both fractional numbers with denominator 147
2. For the 1st fraction, since 21 × 7 = 147,
   40/21 = 40 × 7/21 × 7 = 280/147
3. Likewise, for the 2nd fraction, since 49 × 3 = 147,
   81/49 = 81 × 3/49 × 3 = 243/147
4. Subtract the two like fractions:
   280/147 - 243/147 = 280 - 243/147 = 37/147

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