Answers

Add 25/21 and 20/75

1^st number: 1 4/21, 2^nd number: 20/75

25/21 + 20/75 is 51/35.

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,
   25/21 = 25 × 25/21 × 25 = 625/525
3. Likewise, for the 2nd fraction, since 75 × 7 = 525,
   20/75 = 20 × 7/75 × 7 = 140/525
4. Add the two like fractions:
   625/525 + 140/525 = 625 + 140/525 = 765/525
5. 765/525 simplified gives 51/35
6. So, 25/21 + 20/75 = 51/35
   In mixed form: 116/35

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