Answers

Add 15/72 and 35/20

1^st number: 15/72, 2^nd number: 1 15/20

15/72 + 35/20 is 47/24.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 72 and 20 is 360
   
   Next, find the equivalent fraction of both fractional numbers with denominator 360
2. For the 1st fraction, since 72 × 5 = 360,
   15/72 = 15 × 5/72 × 5 = 75/360
3. Likewise, for the 2nd fraction, since 20 × 18 = 360,
   35/20 = 35 × 18/20 × 18 = 630/360
4. Add the two like fractions:
   75/360 + 630/360 = 75 + 630/360 = 705/360
5. 705/360 simplified gives 47/24
6. So, 15/72 + 35/20 = 47/24
   In mixed form: 123/24

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