Answers

Subtract 35/40 from 30/21

1^st number: 1 9/21, 2^nd number: 35/40

30/21 - 35/40 is 31/56.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 21 and 40 is 840
   
   Next, find the equivalent fraction of both fractional numbers with denominator 840
2. For the 1st fraction, since 21 × 40 = 840,
   30/21 = 30 × 40/21 × 40 = 1200/840
3. Likewise, for the 2nd fraction, since 40 × 21 = 840,
   35/40 = 35 × 21/40 × 21 = 735/840
4. Subtract the two like fractions:
   1200/840 - 735/840 = 1200 - 735/840 = 465/840
5. After reducing the fraction, the answer is 31/56

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