Answers

Add 15/84 and 10/72

15/84 + 10/72 is 20/63.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 84 and 72 is 504
   
   Next, find the equivalent fraction of both fractional numbers with denominator 504
2. For the 1st fraction, since 84 × 6 = 504,
   15/84 = 15 × 6/84 × 6 = 90/504
3. Likewise, for the 2nd fraction, since 72 × 7 = 504,
   10/72 = 10 × 7/72 × 7 = 70/504
4. Add the two like fractions:
   90/504 + 70/504 = 90 + 70/504 = 160/504
5. 160/504 simplified gives 20/63
6. So, 15/84 + 10/72 = 20/63

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