Answers

Add 72/56 and 21/18

1^st number: 1 16/56, 2^nd number: 1 3/18

72/56 + 21/18 is 103/42.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 56 and 18 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 18 × 28 = 504,
   21/18 = 21 × 28/18 × 28 = 588/504
4. Add the two like fractions:
   648/504 + 588/504 = 648 + 588/504 = 1236/504
5. 1236/504 simplified gives 103/42
6. So, 72/56 + 21/18 = 103/42
   In mixed form: 219/42

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