Answers

Add 90/80 and 50/15

1^st number: 1 10/80, 2^nd number: 3 5/15

90/80 + 50/15 is 107/24.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 80 and 15 is 240
   
   Next, find the equivalent fraction of both fractional numbers with denominator 240
2. For the 1st fraction, since 80 × 3 = 240,
   90/80 = 90 × 3/80 × 3 = 270/240
3. Likewise, for the 2nd fraction, since 15 × 16 = 240,
   50/15 = 50 × 16/15 × 16 = 800/240
4. Add the two like fractions:
   270/240 + 800/240 = 270 + 800/240 = 1070/240
5. 1070/240 simplified gives 107/24
6. So, 90/80 + 50/15 = 107/24
   In mixed form: 411/24

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