Answers

Add 90/15 and 30/72

1^st number: 6 0/15, 2^nd number: 30/72

90/15 + 30/72 is 77/12.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 15 and 72 is 360
   
   Next, find the equivalent fraction of both fractional numbers with denominator 360
2. For the 1st fraction, since 15 × 24 = 360,
   90/15 = 90 × 24/15 × 24 = 2160/360
3. Likewise, for the 2nd fraction, since 72 × 5 = 360,
   30/72 = 30 × 5/72 × 5 = 150/360
4. Add the two like fractions:
   2160/360 + 150/360 = 2160 + 150/360 = 2310/360
5. 2310/360 simplified gives 77/12
6. So, 90/15 + 30/72 = 77/12
   In mixed form: 65/12

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