Answers

Add 84/7 and 81/72

1^st number: 12 0/7, 2^nd number: 1 9/72

84/7 + 81/72 is 105/8.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 7 and 72 is 504
   
   Next, find the equivalent fraction of both fractional numbers with denominator 504
2. For the 1st fraction, since 7 × 72 = 504,
   84/7 = 84 × 72/7 × 72 = 6048/504
3. Likewise, for the 2nd fraction, since 72 × 7 = 504,
   81/72 = 81 × 7/72 × 7 = 567/504
4. Add the two like fractions:
   6048/504 + 567/504 = 6048 + 567/504 = 6615/504
5. 6615/504 simplified gives 105/8
6. So, 84/7 + 81/72 = 105/8
   In mixed form: 131/8

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