Answers

Add 72/60 and 14/21

1^st number: 1 12/60, 2^nd number: 14/21

72/60 + 14/21 is 28/15.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 60 and 21 is 420
   
   Next, find the equivalent fraction of both fractional numbers with denominator 420
2. For the 1st fraction, since 60 × 7 = 420,
   72/60 = 72 × 7/60 × 7 = 504/420
3. Likewise, for the 2nd fraction, since 21 × 20 = 420,
   14/21 = 14 × 20/21 × 20 = 280/420
4. Add the two like fractions:
   504/420 + 280/420 = 504 + 280/420 = 784/420
5. 784/420 simplified gives 28/15
6. So, 72/60 + 14/21 = 28/15
   In mixed form: 113/15

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