Answers

Add 80/36 and 90/20

1^st number: 2 8/36, 2^nd number: 4 10/20

80/36 + 90/20 is 121/18.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 36 and 20 is 180
   
   Next, find the equivalent fraction of both fractional numbers with denominator 180
2. For the 1st fraction, since 36 × 5 = 180,
   80/36 = 80 × 5/36 × 5 = 400/180
3. Likewise, for the 2nd fraction, since 20 × 9 = 180,
   90/20 = 90 × 9/20 × 9 = 810/180
4. Add the two like fractions:
   400/180 + 810/180 = 400 + 810/180 = 1210/180
5. 1210/180 simplified gives 121/18
6. So, 80/36 + 90/20 = 121/18
   In mixed form: 613/18

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