Answers

Subtract 20/21 from 84/40

1^st number: 2 4/40, 2^nd number: 20/21

84/40 - 20/21 is 241/210.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 40 and 21 is 840
   
   Next, find the equivalent fraction of both fractional numbers with denominator 840
2. For the 1st fraction, since 40 × 21 = 840,
   84/40 = 84 × 21/40 × 21 = 1764/840
3. Likewise, for the 2nd fraction, since 21 × 40 = 840,
   20/21 = 20 × 40/21 × 40 = 800/840
4. Subtract the two like fractions:
   1764/840 - 800/840 = 1764 - 800/840 = 964/840
5. After reducing the fraction, the answer is 241/210
6. In mixed form: 131/210

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