Answers

Add 60/21 and 40/9

1^st number: 2 18/21, 2^nd number: 4 4/9

60/21 + 40/9 is 460/63.

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,
   60/21 = 60 × 3/21 × 3 = 180/63
3. Likewise, for the 2nd fraction, since 9 × 7 = 63,
   40/9 = 40 × 7/9 × 7 = 280/63
4. Add the two like fractions:
   180/63 + 280/63 = 180 + 280/63 = 460/63
5. So, 60/21 + 40/9 = 460/63
   In mixed form: 719/63

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