Answers

Add 20/5 and 72/80

1^st number: 4 0/5, 2^nd number: 72/80

20/5 + 72/80 is 49/10.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 5 and 80 is 80
   
   Next, find the equivalent fraction of both fractional numbers with denominator 80
2. For the 1st fraction, since 5 × 16 = 80,
   20/5 = 20 × 16/5 × 16 = 320/80
3. Likewise, for the 2nd fraction, since 80 × 1 = 80,
   72/80 = 72 × 1/80 × 1 = 72/80
4. Add the two like fractions:
   320/80 + 72/80 = 320 + 72/80 = 392/80
5. 392/80 simplified gives 49/10
6. So, 20/5 + 72/80 = 49/10
   In mixed form: 49/10

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