Answers

Add 42/21 and 6/9

1^st number: 2 0/21, 2^nd number: 6/9

42/21 + 6/9 is 8/3.

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,
   42/21 = 42 × 3/21 × 3 = 126/63
3. Likewise, for the 2nd fraction, since 9 × 7 = 63,
   6/9 = 6 × 7/9 × 7 = 42/63
4. Add the two like fractions:
   126/63 + 42/63 = 126 + 42/63 = 168/63
5. 168/63 simplified gives 8/3
6. So, 42/21 + 6/9 = 8/3
   In mixed form: 22/3

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