Answers

Add 20/21 and 45/30

1^st number: 20/21, 2^nd number: 1 15/30

20/21 + 45/30 is 103/42.

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,
   20/21 = 20 × 10/21 × 10 = 200/210
3. Likewise, for the 2nd fraction, since 30 × 7 = 210,
   45/30 = 45 × 7/30 × 7 = 315/210
4. Add the two like fractions:
   200/210 + 315/210 = 200 + 315/210 = 515/210
5. 515/210 simplified gives 103/42
6. So, 20/21 + 45/30 = 103/42
   In mixed form: 219/42

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