Answers

Add 45/90 and 81/16

1^st number: 45/90, 2^nd number: 5 1/16

45/90 + 81/16 is 89/16.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 90 and 16 is 720
   
   Next, find the equivalent fraction of both fractional numbers with denominator 720
2. For the 1st fraction, since 90 × 8 = 720,
   45/90 = 45 × 8/90 × 8 = 360/720
3. Likewise, for the 2nd fraction, since 16 × 45 = 720,
   81/16 = 81 × 45/16 × 45 = 3645/720
4. Add the two like fractions:
   360/720 + 3645/720 = 360 + 3645/720 = 4005/720
5. 4005/720 simplified gives 89/16
6. So, 45/90 + 81/16 = 89/16
   In mixed form: 59/16

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