Answers

Add 63/5 and 60/21

1^st number: 12 3/5, 2^nd number: 2 18/21

63/5 + 60/21 is 541/35.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 5 and 21 is 105
   
   Next, find the equivalent fraction of both fractional numbers with denominator 105
2. For the 1st fraction, since 5 × 21 = 105,
   63/5 = 63 × 21/5 × 21 = 1323/105
3. Likewise, for the 2nd fraction, since 21 × 5 = 105,
   60/21 = 60 × 5/21 × 5 = 300/105
4. Add the two like fractions:
   1323/105 + 300/105 = 1323 + 300/105 = 1623/105
5. 1623/105 simplified gives 541/35
6. So, 63/5 + 60/21 = 541/35
   In mixed form: 1516/35

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