Answers

Add 21/42 and 84/60

1^st number: 21/42, 2^nd number: 1 24/60

21/42 + 84/60 is 19/10.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 42 and 60 is 420
   
   Next, find the equivalent fraction of both fractional numbers with denominator 420
2. For the 1st fraction, since 42 × 10 = 420,
   21/42 = 21 × 10/42 × 10 = 210/420
3. Likewise, for the 2nd fraction, since 60 × 7 = 420,
   84/60 = 84 × 7/60 × 7 = 588/420
4. Add the two like fractions:
   210/420 + 588/420 = 210 + 588/420 = 798/420
5. 798/420 simplified gives 19/10
6. So, 21/42 + 84/60 = 19/10
   In mixed form: 19/10

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