Answers

Add 90/25 and 20/80

1^st number: 3 15/25, 2^nd number: 20/80

90/25 + 20/80 is 77/20.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 25 and 80 is 400
   
   Next, find the equivalent fraction of both fractional numbers with denominator 400
2. For the 1st fraction, since 25 × 16 = 400,
   90/25 = 90 × 16/25 × 16 = 1440/400
3. Likewise, for the 2nd fraction, since 80 × 5 = 400,
   20/80 = 20 × 5/80 × 5 = 100/400
4. Add the two like fractions:
   1440/400 + 100/400 = 1440 + 100/400 = 1540/400
5. 1540/400 simplified gives 77/20
6. So, 90/25 + 20/80 = 77/20
   In mixed form: 317/20

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