Answers

Add 30/28 and 84/72

1^st number: 1 2/28, 2^nd number: 1 12/72

30/28 + 84/72 is 47/21.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 28 and 72 is 504
   
   Next, find the equivalent fraction of both fractional numbers with denominator 504
2. For the 1st fraction, since 28 × 18 = 504,
   30/28 = 30 × 18/28 × 18 = 540/504
3. Likewise, for the 2nd fraction, since 72 × 7 = 504,
   84/72 = 84 × 7/72 × 7 = 588/504
4. Add the two like fractions:
   540/504 + 588/504 = 540 + 588/504 = 1128/504
5. 1128/504 simplified gives 47/21
6. So, 30/28 + 84/72 = 47/21
   In mixed form: 25/21

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