Answers

Add 90/72 and 75/9

1^st number: 1 18/72, 2^nd number: 8 3/9

90/72 + 75/9 is 115/12.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 72 and 9 is 72
   
   Next, find the equivalent fraction of both fractional numbers with denominator 72
2. For the 1st fraction, since 72 × 1 = 72,
   90/72 = 90 × 1/72 × 1 = 90/72
3. Likewise, for the 2nd fraction, since 9 × 8 = 72,
   75/9 = 75 × 8/9 × 8 = 600/72
4. Add the two like fractions:
   90/72 + 600/72 = 90 + 600/72 = 690/72
5. 690/72 simplified gives 115/12
6. So, 90/72 + 75/9 = 115/12
   In mixed form: 97/12

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