Answers

Add 28/72 and 90/15

1^st number: 28/72, 2^nd number: 6 0/15

28/72 + 90/15 is 115/18.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 72 and 15 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 15 × 24 = 360,
   90/15 = 90 × 24/15 × 24 = 2160/360
4. Add the two like fractions:
   140/360 + 2160/360 = 140 + 2160/360 = 2300/360
5. 2300/360 simplified gives 115/18
6. So, 28/72 + 90/15 = 115/18
   In mixed form: 67/18

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