Answers

Add 54/16 and 21/60

1^st number: 3 6/16, 2^nd number: 21/60

54/16 + 21/60 is 149/40.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 16 and 60 is 240
   
   Next, find the equivalent fraction of both fractional numbers with denominator 240
2. For the 1st fraction, since 16 × 15 = 240,
   54/16 = 54 × 15/16 × 15 = 810/240
3. Likewise, for the 2nd fraction, since 60 × 4 = 240,
   21/60 = 21 × 4/60 × 4 = 84/240
4. Add the two like fractions:
   810/240 + 84/240 = 810 + 84/240 = 894/240
5. 894/240 simplified gives 149/40
6. So, 54/16 + 21/60 = 149/40
   In mixed form: 329/40

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