Answers

Add 72/56 and 84/9

1^st number: 1 16/56, 2^nd number: 9 3/9

72/56 + 84/9 is 223/21.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 56 and 9 is 504
   
   Next, find the equivalent fraction of both fractional numbers with denominator 504
2. For the 1st fraction, since 56 × 9 = 504,
   72/56 = 72 × 9/56 × 9 = 648/504
3. Likewise, for the 2nd fraction, since 9 × 56 = 504,
   84/9 = 84 × 56/9 × 56 = 4704/504
4. Add the two like fractions:
   648/504 + 4704/504 = 648 + 4704/504 = 5352/504
5. 5352/504 simplified gives 223/21
6. So, 72/56 + 84/9 = 223/21
   In mixed form: 1013/21

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