Answers

Add 60/12 and 84/21

1^st number: 5 0/12, 2^nd number: 4 0/21

60/12 + 84/21 is 9/1.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 12 and 21 is 84
   
   Next, find the equivalent fraction of both fractional numbers with denominator 84
2. For the 1st fraction, since 12 × 7 = 84,
   60/12 = 60 × 7/12 × 7 = 420/84
3. Likewise, for the 2nd fraction, since 21 × 4 = 84,
   84/21 = 84 × 4/21 × 4 = 336/84
4. Add the two like fractions:
   420/84 + 336/84 = 420 + 336/84 = 756/84
5. 756/84 simplified gives 9/1
6. So, 60/12 + 84/21 = 9/1

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