Answers

Add 90/72 and 27/16

1^st number: 1 18/72, 2^nd number: 1 11/16

90/72 + 27/16 is 47/16.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 72 and 16 is 144
   
   Next, find the equivalent fraction of both fractional numbers with denominator 144
2. For the 1st fraction, since 72 × 2 = 144,
   90/72 = 90 × 2/72 × 2 = 180/144
3. Likewise, for the 2nd fraction, since 16 × 9 = 144,
   27/16 = 27 × 9/16 × 9 = 243/144
4. Add the two like fractions:
   180/144 + 243/144 = 180 + 243/144 = 423/144
5. 423/144 simplified gives 47/16
6. So, 90/72 + 27/16 = 47/16
   In mixed form: 215/16

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