Answers

Add 80/16 and 42/40

1^st number: 5 0/16, 2^nd number: 1 2/40

80/16 + 42/40 is 121/20.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 16 and 40 is 80
   
   Next, find the equivalent fraction of both fractional numbers with denominator 80
2. For the 1st fraction, since 16 × 5 = 80,
   80/16 = 80 × 5/16 × 5 = 400/80
3. Likewise, for the 2nd fraction, since 40 × 2 = 80,
   42/40 = 42 × 2/40 × 2 = 84/80
4. Add the two like fractions:
   400/80 + 84/80 = 400 + 84/80 = 484/80
5. 484/80 simplified gives 121/20
6. So, 80/16 + 42/40 = 121/20
   In mixed form: 61/20

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