Answers

Add 4/21 and 25/72

4/21 + 25/72 is 271/504.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 21 and 72 is 504
   
   Next, find the equivalent fraction of both fractional numbers with denominator 504
2. For the 1st fraction, since 21 × 24 = 504,
   4/21 = 4 × 24/21 × 24 = 96/504
3. Likewise, for the 2nd fraction, since 72 × 7 = 504,
   25/72 = 25 × 7/72 × 7 = 175/504
4. Add the two like fractions:
   96/504 + 175/504 = 96 + 175/504 = 271/504
5. So, 4/21 + 25/72 = 271/504

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