Answers

Add 81/84 and 63/10

1^st number: 81/84, 2^nd number: 6 3/10

81/84 + 63/10 is 1017/140.

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,
   81/84 = 81 × 5/84 × 5 = 405/420
3. Likewise, for the 2nd fraction, since 10 × 42 = 420,
   63/10 = 63 × 42/10 × 42 = 2646/420
4. Add the two like fractions:
   405/420 + 2646/420 = 405 + 2646/420 = 3051/420
5. 3051/420 simplified gives 1017/140
6. So, 81/84 + 63/10 = 1017/140
   In mixed form: 737/140

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