Answers

Add 60/21 and 28/30

1^st number: 2 18/21, 2^nd number: 28/30

60/21 + 28/30 is 398/105.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 21 and 30 is 210
   
   Next, find the equivalent fraction of both fractional numbers with denominator 210
2. For the 1st fraction, since 21 × 10 = 210,
   60/21 = 60 × 10/21 × 10 = 600/210
3. Likewise, for the 2nd fraction, since 30 × 7 = 210,
   28/30 = 28 × 7/30 × 7 = 196/210
4. Add the two like fractions:
   600/210 + 196/210 = 600 + 196/210 = 796/210
5. 796/210 simplified gives 398/105
6. So, 60/21 + 28/30 = 398/105
   In mixed form: 383/105

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