Answers

Add 42/10 and 35/80

1^st number: 4 2/10, 2^nd number: 35/80

42/10 + 35/80 is 371/80.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 10 and 80 is 80
   
   Next, find the equivalent fraction of both fractional numbers with denominator 80
2. For the 1st fraction, since 10 × 8 = 80,
   42/10 = 42 × 8/10 × 8 = 336/80
3. Likewise, for the 2nd fraction, since 80 × 1 = 80,
   35/80 = 35 × 1/80 × 1 = 35/80
4. Add the two like fractions:
   336/80 + 35/80 = 336 + 35/80 = 371/80
5. So, 42/10 + 35/80 = 371/80
   In mixed form: 451/80

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