Answers

Add 90/80 and 30/90

1^st number: 1 10/80, 2^nd number: 30/90

90/80 + 30/90 is 35/24.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 80 and 90 is 720
   
   Next, find the equivalent fraction of both fractional numbers with denominator 720
2. For the 1st fraction, since 80 × 9 = 720,
   90/80 = 90 × 9/80 × 9 = 810/720
3. Likewise, for the 2nd fraction, since 90 × 8 = 720,
   30/90 = 30 × 8/90 × 8 = 240/720
4. Add the two like fractions:
   810/720 + 240/720 = 810 + 240/720 = 1050/720
5. 1050/720 simplified gives 35/24
6. So, 90/80 + 30/90 = 35/24
   In mixed form: 111/24

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