Answers

Add 72/28 and 45/12

1^st number: 2 16/28, 2^nd number: 3 9/12

72/28 + 45/12 is 177/28.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 28 and 12 is 84
   
   Next, find the equivalent fraction of both fractional numbers with denominator 84
2. For the 1st fraction, since 28 × 3 = 84,
   72/28 = 72 × 3/28 × 3 = 216/84
3. Likewise, for the 2nd fraction, since 12 × 7 = 84,
   45/12 = 45 × 7/12 × 7 = 315/84
4. Add the two like fractions:
   216/84 + 315/84 = 216 + 315/84 = 531/84
5. 531/84 simplified gives 177/28
6. So, 72/28 + 45/12 = 177/28
   In mixed form: 69/28

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