Answers

Add 72/90 and 81/10

1^st number: 72/90, 2^nd number: 8 1/10

72/90 + 81/10 is 89/10.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 90 and 10 is 90
   
   Next, find the equivalent fraction of both fractional numbers with denominator 90
2. For the 1st fraction, since 90 × 1 = 90,
   72/90 = 72 × 1/90 × 1 = 72/90
3. Likewise, for the 2nd fraction, since 10 × 9 = 90,
   81/10 = 81 × 9/10 × 9 = 729/90
4. Add the two like fractions:
   72/90 + 729/90 = 72 + 729/90 = 801/90
5. 801/90 simplified gives 89/10
6. So, 72/90 + 81/10 = 89/10
   In mixed form: 89/10

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