Answers

Add 72/28 and 20/54

1^st number: 2 16/28, 2^nd number: 20/54

72/28 + 20/54 is 556/189.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 28 and 54 is 756
   
   Next, find the equivalent fraction of both fractional numbers with denominator 756
2. For the 1st fraction, since 28 × 27 = 756,
   72/28 = 72 × 27/28 × 27 = 1944/756
3. Likewise, for the 2nd fraction, since 54 × 14 = 756,
   20/54 = 20 × 14/54 × 14 = 280/756
4. Add the two like fractions:
   1944/756 + 280/756 = 1944 + 280/756 = 2224/756
5. 2224/756 simplified gives 556/189
6. So, 72/28 + 20/54 = 556/189
   In mixed form: 2178/189

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