Answers

Add 81/63 and 10/8

1^st number: 1 18/63, 2^nd number: 1 2/8

81/63 + 10/8 is 71/28.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 63 and 8 is 504
   
   Next, find the equivalent fraction of both fractional numbers with denominator 504
2. For the 1st fraction, since 63 × 8 = 504,
   81/63 = 81 × 8/63 × 8 = 648/504
3. Likewise, for the 2nd fraction, since 8 × 63 = 504,
   10/8 = 10 × 63/8 × 63 = 630/504
4. Add the two like fractions:
   648/504 + 630/504 = 648 + 630/504 = 1278/504
5. 1278/504 simplified gives 71/28
6. So, 81/63 + 10/8 = 71/28
   In mixed form: 215/28

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