Answers

Add 12/72 and 45/40

1^st number: 12/72, 2^nd number: 1 5/40

12/72 + 45/40 is 31/24.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 72 and 40 is 360
   
   Next, find the equivalent fraction of both fractional numbers with denominator 360
2. For the 1st fraction, since 72 × 5 = 360,
   12/72 = 12 × 5/72 × 5 = 60/360
3. Likewise, for the 2nd fraction, since 40 × 9 = 360,
   45/40 = 45 × 9/40 × 9 = 405/360
4. Add the two like fractions:
   60/360 + 405/360 = 60 + 405/360 = 465/360
5. 465/360 simplified gives 31/24
6. So, 12/72 + 45/40 = 31/24
   In mixed form: 17/24

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