Answers

Add 15/21 and 4/75

15/21 + 4/75 is 403/525.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 21 and 75 is 525
   
   Next, find the equivalent fraction of both fractional numbers with denominator 525
2. For the 1st fraction, since 21 × 25 = 525,
   15/21 = 15 × 25/21 × 25 = 375/525
3. Likewise, for the 2nd fraction, since 75 × 7 = 525,
   4/75 = 4 × 7/75 × 7 = 28/525
4. Add the two like fractions:
   375/525 + 28/525 = 375 + 28/525 = 403/525
5. So, 15/21 + 4/75 = 403/525

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