Answers

Add 40/21 and 20/9

1^st number: 1 19/21, 2^nd number: 2 2/9

40/21 + 20/9 is 260/63.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 21 and 9 is 63
   
   Next, find the equivalent fraction of both fractional numbers with denominator 63
2. For the 1st fraction, since 21 × 3 = 63,
   40/21 = 40 × 3/21 × 3 = 120/63
3. Likewise, for the 2nd fraction, since 9 × 7 = 63,
   20/9 = 20 × 7/9 × 7 = 140/63
4. Add the two like fractions:
   120/63 + 140/63 = 120 + 140/63 = 260/63
5. So, 40/21 + 20/9 = 260/63
   In mixed form: 48/63

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