Answers

Add 20/21 and 64/30

1^st number: 20/21, 2^nd number: 2 4/30

20/21 + 64/30 is 108/35.

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,
   64/30 = 64 × 7/30 × 7 = 448/210
4. Add the two like fractions:
   200/210 + 448/210 = 200 + 448/210 = 648/210
5. 648/210 simplified gives 108/35
6. So, 20/21 + 64/30 = 108/35
   In mixed form: 33/35

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