Answers

Add 28/16 and 45/90

1^st number: 1 12/16, 2^nd number: 45/90

28/16 + 45/90 is 9/4.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 16 and 90 is 720
   
   Next, find the equivalent fraction of both fractional numbers with denominator 720
2. For the 1st fraction, since 16 × 45 = 720,
   28/16 = 28 × 45/16 × 45 = 1260/720
3. Likewise, for the 2nd fraction, since 90 × 8 = 720,
   45/90 = 45 × 8/90 × 8 = 360/720
4. Add the two like fractions:
   1260/720 + 360/720 = 1260 + 360/720 = 1620/720
5. 1620/720 simplified gives 9/4
6. So, 28/16 + 45/90 = 9/4
   In mixed form: 21/4

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