Answers

Add 42/15 and 36/72

1^st number: 2 12/15, 2^nd number: 36/72

42/15 + 36/72 is 33/10.

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,
   42/15 = 42 × 24/15 × 24 = 1008/360
3. Likewise, for the 2nd fraction, since 72 × 5 = 360,
   36/72 = 36 × 5/72 × 5 = 180/360
4. Add the two like fractions:
   1008/360 + 180/360 = 1008 + 180/360 = 1188/360
5. 1188/360 simplified gives 33/10
6. So, 42/15 + 36/72 = 33/10
   In mixed form: 33/10

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