Answers

Add 42/21 and 12/60

1^st number: 2 0/21, 2^nd number: 12/60

42/21 + 12/60 is 11/5.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 21 and 60 is 420
   
   Next, find the equivalent fraction of both fractional numbers with denominator 420
2. For the 1st fraction, since 21 × 20 = 420,
   42/21 = 42 × 20/21 × 20 = 840/420
3. Likewise, for the 2nd fraction, since 60 × 7 = 420,
   12/60 = 12 × 7/60 × 7 = 84/420
4. Add the two like fractions:
   840/420 + 84/420 = 840 + 84/420 = 924/420
5. 924/420 simplified gives 11/5
6. So, 42/21 + 12/60 = 11/5
   In mixed form: 21/5

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