Answers

Add 28/72 and 45/30

1^st number: 28/72, 2^nd number: 1 15/30

28/72 + 45/30 is 17/9.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 72 and 30 is 360
   
   Next, find the equivalent fraction of both fractional numbers with denominator 360
2. For the 1st fraction, since 72 × 5 = 360,
   28/72 = 28 × 5/72 × 5 = 140/360
3. Likewise, for the 2nd fraction, since 30 × 12 = 360,
   45/30 = 45 × 12/30 × 12 = 540/360
4. Add the two like fractions:
   140/360 + 540/360 = 140 + 540/360 = 680/360
5. 680/360 simplified gives 17/9
6. So, 28/72 + 45/30 = 17/9
   In mixed form: 18/9

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