Answers

Add 3/80 and 70/20

1^st number: 3/80, 2^nd number: 3 10/20

3/80 + 70/20 is 283/80.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 80 and 20 is 80
   
   Next, find the equivalent fraction of both fractional numbers with denominator 80
2. For the 1st fraction, since 80 × 1 = 80,
   3/80 = 3 × 1/80 × 1 = 3/80
3. Likewise, for the 2nd fraction, since 20 × 4 = 80,
   70/20 = 70 × 4/20 × 4 = 280/80
4. Add the two like fractions:
   3/80 + 280/80 = 3 + 280/80 = 283/80
5. So, 3/80 + 70/20 = 283/80
   In mixed form: 343/80

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