Answers

Add 8/42 and 56/72

8/42 + 56/72 is 61/63.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 42 and 72 is 504
   
   Next, find the equivalent fraction of both fractional numbers with denominator 504
2. For the 1st fraction, since 42 × 12 = 504,
   8/42 = 8 × 12/42 × 12 = 96/504
3. Likewise, for the 2nd fraction, since 72 × 7 = 504,
   56/72 = 56 × 7/72 × 7 = 392/504
4. Add the two like fractions:
   96/504 + 392/504 = 96 + 392/504 = 488/504
5. 488/504 simplified gives 61/63
6. So, 8/42 + 56/72 = 61/63

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