Answers

Add 10/15 and 21/20

1^st number: 10/15, 2^nd number: 1 1/20

10/15 + 21/20 is 103/60.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 15 and 20 is 60
   
   Next, find the equivalent fraction of both fractional numbers with denominator 60
2. For the 1st fraction, since 15 × 4 = 60,
   10/15 = 10 × 4/15 × 4 = 40/60
3. Likewise, for the 2nd fraction, since 20 × 3 = 60,
   21/20 = 21 × 3/20 × 3 = 63/60
4. Add the two like fractions:
   40/60 + 63/60 = 40 + 63/60 = 103/60
5. So, 10/15 + 21/20 = 103/60
   In mixed form: 143/60

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