Answers

Subtract 40/21 from 84/10

1^st number: 8 4/10, 2^nd number: 1 19/21

84/10 - 40/21 is 682/105.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 10 and 21 is 210
   
   Next, find the equivalent fraction of both fractional numbers with denominator 210
2. For the 1st fraction, since 10 × 21 = 210,
   84/10 = 84 × 21/10 × 21 = 1764/210
3. Likewise, for the 2nd fraction, since 21 × 10 = 210,
   40/21 = 40 × 10/21 × 10 = 400/210
4. Subtract the two like fractions:
   1764/210 - 400/210 = 1764 - 400/210 = 1364/210
5. After reducing the fraction, the answer is 682/105
6. In mixed form: 652/105

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