Answers

Add 72/45 and 81/40

1^st number: 1 27/45, 2^nd number: 2 1/40

72/45 + 81/40 is 29/8.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 45 and 40 is 360
   
   Next, find the equivalent fraction of both fractional numbers with denominator 360
2. For the 1st fraction, since 45 × 8 = 360,
   72/45 = 72 × 8/45 × 8 = 576/360
3. Likewise, for the 2nd fraction, since 40 × 9 = 360,
   81/40 = 81 × 9/40 × 9 = 729/360
4. Add the two like fractions:
   576/360 + 729/360 = 576 + 729/360 = 1305/360
5. 1305/360 simplified gives 29/8
6. So, 72/45 + 81/40 = 29/8
   In mixed form: 35/8

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