Answers

Add 4/42 and 6/72

4/42 + 6/72 is 5/28.

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,
   4/42 = 4 × 12/42 × 12 = 48/504
3. Likewise, for the 2nd fraction, since 72 × 7 = 504,
   6/72 = 6 × 7/72 × 7 = 42/504
4. Add the two like fractions:
   48/504 + 42/504 = 48 + 42/504 = 90/504
5. 90/504 simplified gives 5/28
6. So, 4/42 + 6/72 = 5/28

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