Answers

Add 81/90 and 72/25

1^st number: 81/90, 2^nd number: 2 22/25

81/90 + 72/25 is 189/50.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 90 and 25 is 450
   
   Next, find the equivalent fraction of both fractional numbers with denominator 450
2. For the 1st fraction, since 90 × 5 = 450,
   81/90 = 81 × 5/90 × 5 = 405/450
3. Likewise, for the 2nd fraction, since 25 × 18 = 450,
   72/25 = 72 × 18/25 × 18 = 1296/450
4. Add the two like fractions:
   405/450 + 1296/450 = 405 + 1296/450 = 1701/450
5. 1701/450 simplified gives 189/50
6. So, 81/90 + 72/25 = 189/50
   In mixed form: 339/50

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