Answers

Add 72/40 and 45/72

1^st number: 1 32/40, 2^nd number: 45/72

72/40 + 45/72 is 97/40.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 40 and 72 is 360
   
   Next, find the equivalent fraction of both fractional numbers with denominator 360
2. For the 1st fraction, since 40 × 9 = 360,
   72/40 = 72 × 9/40 × 9 = 648/360
3. Likewise, for the 2nd fraction, since 72 × 5 = 360,
   45/72 = 45 × 5/72 × 5 = 225/360
4. Add the two like fractions:
   648/360 + 225/360 = 648 + 225/360 = 873/360
5. 873/360 simplified gives 97/40
6. So, 72/40 + 45/72 = 97/40
   In mixed form: 217/40

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