Answers

Add 60/40 and 21/16

1^st number: 1 20/40, 2^nd number: 1 5/16

60/40 + 21/16 is 45/16.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 40 and 16 is 80
   
   Next, find the equivalent fraction of both fractional numbers with denominator 80
2. For the 1st fraction, since 40 × 2 = 80,
   60/40 = 60 × 2/40 × 2 = 120/80
3. Likewise, for the 2nd fraction, since 16 × 5 = 80,
   21/16 = 21 × 5/16 × 5 = 105/80
4. Add the two like fractions:
   120/80 + 105/80 = 120 + 105/80 = 225/80
5. 225/80 simplified gives 45/16
6. So, 60/40 + 21/16 = 45/16
   In mixed form: 213/16

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