Answers

Add 15/63 and 8/56

15/63 + 8/56 is 8/21.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 63 and 56 is 504
   
   Next, find the equivalent fraction of both fractional numbers with denominator 504
2. For the 1st fraction, since 63 × 8 = 504,
   15/63 = 15 × 8/63 × 8 = 120/504
3. Likewise, for the 2nd fraction, since 56 × 9 = 504,
   8/56 = 8 × 9/56 × 9 = 72/504
4. Add the two like fractions:
   120/504 + 72/504 = 120 + 72/504 = 192/504
5. 192/504 simplified gives 8/21
6. So, 15/63 + 8/56 = 8/21

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