Answers

Add 72/40 and 80/60

1^st number: 1 32/40, 2^nd number: 1 20/60

72/40 + 80/60 is 47/15.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 40 and 60 is 120
   
   Next, find the equivalent fraction of both fractional numbers with denominator 120
2. For the 1st fraction, since 40 × 3 = 120,
   72/40 = 72 × 3/40 × 3 = 216/120
3. Likewise, for the 2nd fraction, since 60 × 2 = 120,
   80/60 = 80 × 2/60 × 2 = 160/120
4. Add the two like fractions:
   216/120 + 160/120 = 216 + 160/120 = 376/120
5. 376/120 simplified gives 47/15
6. So, 72/40 + 80/60 = 47/15
   In mixed form: 32/15

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