Answers

Add 72/40 and 63/18

1^st number: 1 32/40, 2^nd number: 3 9/18

72/40 + 63/18 is 53/10.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 40 and 18 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 18 × 20 = 360,
   63/18 = 63 × 20/18 × 20 = 1260/360
4. Add the two like fractions:
   648/360 + 1260/360 = 648 + 1260/360 = 1908/360
5. 1908/360 simplified gives 53/10
6. So, 72/40 + 63/18 = 53/10
   In mixed form: 53/10

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