Answers

Add 45/63 and 75/20

1^st number: 45/63, 2^nd number: 3 15/20

45/63 + 75/20 is 125/28.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 63 and 20 is 1260
   
   Next, find the equivalent fraction of both fractional numbers with denominator 1260
2. For the 1st fraction, since 63 × 20 = 1260,
   45/63 = 45 × 20/63 × 20 = 900/1260
3. Likewise, for the 2nd fraction, since 20 × 63 = 1260,
   75/20 = 75 × 63/20 × 63 = 4725/1260
4. Add the two like fractions:
   900/1260 + 4725/1260 = 900 + 4725/1260 = 5625/1260
5. 5625/1260 simplified gives 125/28
6. So, 45/63 + 75/20 = 125/28
   In mixed form: 413/28

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