Answers

Add 1/84 and 21/10

1^st number: 1/84, 2^nd number: 2 1/10

1/84 + 21/10 is 887/420.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 84 and 10 is 420
   
   Next, find the equivalent fraction of both fractional numbers with denominator 420
2. For the 1st fraction, since 84 × 5 = 420,
   1/84 = 1 × 5/84 × 5 = 5/420
3. Likewise, for the 2nd fraction, since 10 × 42 = 420,
   21/10 = 21 × 42/10 × 42 = 882/420
4. Add the two like fractions:
   5/420 + 882/420 = 5 + 882/420 = 887/420
5. So, 1/84 + 21/10 = 887/420
   In mixed form: 247/420

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