Answers

Add 15/72 and 70/42

1^st number: 15/72, 2^nd number: 1 28/42

15/72 + 70/42 is 15/8.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 72 and 42 is 504
   
   Next, find the equivalent fraction of both fractional numbers with denominator 504
2. For the 1st fraction, since 72 × 7 = 504,
   15/72 = 15 × 7/72 × 7 = 105/504
3. Likewise, for the 2nd fraction, since 42 × 12 = 504,
   70/42 = 70 × 12/42 × 12 = 840/504
4. Add the two like fractions:
   105/504 + 840/504 = 105 + 840/504 = 945/504
5. 945/504 simplified gives 15/8
6. So, 15/72 + 70/42 = 15/8
   In mixed form: 17/8

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