Answers

Add 45/90 and 80/20

1^st number: 45/90, 2^nd number: 4 0/20

45/90 + 80/20 is 9/2.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 90 and 20 is 180
   
   Next, find the equivalent fraction of both fractional numbers with denominator 180
2. For the 1st fraction, since 90 × 2 = 180,
   45/90 = 45 × 2/90 × 2 = 90/180
3. Likewise, for the 2nd fraction, since 20 × 9 = 180,
   80/20 = 80 × 9/20 × 9 = 720/180
4. Add the two like fractions:
   90/180 + 720/180 = 90 + 720/180 = 810/180
5. 810/180 simplified gives 9/2
6. So, 45/90 + 80/20 = 9/2
   In mixed form: 41/2

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