Answers

Add 18/90 and 45/32

1^st number: 18/90, 2^nd number: 1 13/32

18/90 + 45/32 is 257/160.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 90 and 32 is 1440
   
   Next, find the equivalent fraction of both fractional numbers with denominator 1440
2. For the 1st fraction, since 90 × 16 = 1440,
   18/90 = 18 × 16/90 × 16 = 288/1440
3. Likewise, for the 2nd fraction, since 32 × 45 = 1440,
   45/32 = 45 × 45/32 × 45 = 2025/1440
4. Add the two like fractions:
   288/1440 + 2025/1440 = 288 + 2025/1440 = 2313/1440
5. 2313/1440 simplified gives 257/160
6. So, 18/90 + 45/32 = 257/160
   In mixed form: 197/160

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