Answers

Add 25/8 and 90/80

1^st number: 3 1/8, 2^nd number: 1 10/80

25/8 + 90/80 is 17/4.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 8 and 80 is 80
   
   Next, find the equivalent fraction of both fractional numbers with denominator 80
2. For the 1st fraction, since 8 × 10 = 80,
   25/8 = 25 × 10/8 × 10 = 250/80
3. Likewise, for the 2nd fraction, since 80 × 1 = 80,
   90/80 = 90 × 1/80 × 1 = 90/80
4. Add the two like fractions:
   250/80 + 90/80 = 250 + 90/80 = 340/80
5. 340/80 simplified gives 17/4
6. So, 25/8 + 90/80 = 17/4
   In mixed form: 41/4

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