Answers

Add 81/72 and 45/35

1^st number: 1 9/72, 2^nd number: 1 10/35

81/72 + 45/35 is 135/56.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 72 and 35 is 2520
   
   Next, find the equivalent fraction of both fractional numbers with denominator 2520
2. For the 1st fraction, since 72 × 35 = 2520,
   81/72 = 81 × 35/72 × 35 = 2835/2520
3. Likewise, for the 2nd fraction, since 35 × 72 = 2520,
   45/35 = 45 × 72/35 × 72 = 3240/2520
4. Add the two like fractions:
   2835/2520 + 3240/2520 = 2835 + 3240/2520 = 6075/2520
5. 6075/2520 simplified gives 135/56
6. So, 81/72 + 45/35 = 135/56
   In mixed form: 223/56

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