Answers

Add 42/15 and 18/60

1^st number: 2 12/15, 2^nd number: 18/60

42/15 + 18/60 is 31/10.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 15 and 60 is 60
   
   Next, find the equivalent fraction of both fractional numbers with denominator 60
2. For the 1st fraction, since 15 × 4 = 60,
   42/15 = 42 × 4/15 × 4 = 168/60
3. Likewise, for the 2nd fraction, since 60 × 1 = 60,
   18/60 = 18 × 1/60 × 1 = 18/60
4. Add the two like fractions:
   168/60 + 18/60 = 168 + 18/60 = 186/60
5. 186/60 simplified gives 31/10
6. So, 42/15 + 18/60 = 31/10
   In mixed form: 31/10

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