Answers

Add 30/20 and 72/80

1^st number: 1 10/20, 2^nd number: 72/80

30/20 + 72/80 is 12/5.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 20 and 80 is 80
   
   Next, find the equivalent fraction of both fractional numbers with denominator 80
2. For the 1st fraction, since 20 × 4 = 80,
   30/20 = 30 × 4/20 × 4 = 120/80
3. Likewise, for the 2nd fraction, since 80 × 1 = 80,
   72/80 = 72 × 1/80 × 1 = 72/80
4. Add the two like fractions:
   120/80 + 72/80 = 120 + 72/80 = 192/80
5. 192/80 simplified gives 12/5
6. So, 30/20 + 72/80 = 12/5
   In mixed form: 22/5

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