Answers

Add 84/63 and 15/60

1^st number: 1 21/63, 2^nd number: 15/60

84/63 + 15/60 is 19/12.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 63 and 60 is 1260
   
   Next, find the equivalent fraction of both fractional numbers with denominator 1260
2. For the 1st fraction, since 63 × 20 = 1260,
   84/63 = 84 × 20/63 × 20 = 1680/1260
3. Likewise, for the 2nd fraction, since 60 × 21 = 1260,
   15/60 = 15 × 21/60 × 21 = 315/1260
4. Add the two like fractions:
   1680/1260 + 315/1260 = 1680 + 315/1260 = 1995/1260
5. 1995/1260 simplified gives 19/12
6. So, 84/63 + 15/60 = 19/12
   In mixed form: 17/12

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