Answers

Add 25/45 and 54/21

1^st number: 25/45, 2^nd number: 2 12/21

25/45 + 54/21 is 197/63.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 45 and 21 is 315
   
   Next, find the equivalent fraction of both fractional numbers with denominator 315
2. For the 1st fraction, since 45 × 7 = 315,
   25/45 = 25 × 7/45 × 7 = 175/315
3. Likewise, for the 2nd fraction, since 21 × 15 = 315,
   54/21 = 54 × 15/21 × 15 = 810/315
4. Add the two like fractions:
   175/315 + 810/315 = 175 + 810/315 = 985/315
5. 985/315 simplified gives 197/63
6. So, 25/45 + 54/21 = 197/63
   In mixed form: 38/63

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