Answers

Add 70/21 and 20/36

1^st number: 3 7/21, 2^nd number: 20/36

70/21 + 20/36 is 35/9.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 21 and 36 is 252
   
   Next, find the equivalent fraction of both fractional numbers with denominator 252
2. For the 1st fraction, since 21 × 12 = 252,
   70/21 = 70 × 12/21 × 12 = 840/252
3. Likewise, for the 2nd fraction, since 36 × 7 = 252,
   20/36 = 20 × 7/36 × 7 = 140/252
4. Add the two like fractions:
   840/252 + 140/252 = 840 + 140/252 = 980/252
5. 980/252 simplified gives 35/9
6. So, 70/21 + 20/36 = 35/9
   In mixed form: 38/9

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