Answers

Add 90/20 and 80/27

1^st number: 4 10/20, 2^nd number: 2 26/27

90/20 + 80/27 is 403/54.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 20 and 27 is 540
   
   Next, find the equivalent fraction of both fractional numbers with denominator 540
2. For the 1st fraction, since 20 × 27 = 540,
   90/20 = 90 × 27/20 × 27 = 2430/540
3. Likewise, for the 2nd fraction, since 27 × 20 = 540,
   80/27 = 80 × 20/27 × 20 = 1600/540
4. Add the two like fractions:
   2430/540 + 1600/540 = 2430 + 1600/540 = 4030/540
5. 4030/540 simplified gives 403/54
6. So, 90/20 + 80/27 = 403/54
   In mixed form: 725/54

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