Answers

Add 90/54 and 45/16

1^st number: 1 36/54, 2^nd number: 2 13/16

90/54 + 45/16 is 215/48.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 54 and 16 is 432
   
   Next, find the equivalent fraction of both fractional numbers with denominator 432
2. For the 1st fraction, since 54 × 8 = 432,
   90/54 = 90 × 8/54 × 8 = 720/432
3. Likewise, for the 2nd fraction, since 16 × 27 = 432,
   45/16 = 45 × 27/16 × 27 = 1215/432
4. Add the two like fractions:
   720/432 + 1215/432 = 720 + 1215/432 = 1935/432
5. 1935/432 simplified gives 215/48
6. So, 90/54 + 45/16 = 215/48
   In mixed form: 423/48

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