Answers

Add 25/16 and 21/60

1^st number: 1 9/16, 2^nd number: 21/60

25/16 + 21/60 is 153/80.

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,
   25/16 = 25 × 15/16 × 15 = 375/240
3. Likewise, for the 2nd fraction, since 60 × 4 = 240,
   21/60 = 21 × 4/60 × 4 = 84/240
4. Add the two like fractions:
   375/240 + 84/240 = 375 + 84/240 = 459/240
5. 459/240 simplified gives 153/80
6. So, 25/16 + 21/60 = 153/80
   In mixed form: 173/80

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