Answers

Add 90/27 and 42/80

1^st number: 3 9/27, 2^nd number: 42/80

90/27 + 42/80 is 463/120.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 27 and 80 is 2160
   
   Next, find the equivalent fraction of both fractional numbers with denominator 2160
2. For the 1st fraction, since 27 × 80 = 2160,
   90/27 = 90 × 80/27 × 80 = 7200/2160
3. Likewise, for the 2nd fraction, since 80 × 27 = 2160,
   42/80 = 42 × 27/80 × 27 = 1134/2160
4. Add the two like fractions:
   7200/2160 + 1134/2160 = 7200 + 1134/2160 = 8334/2160
5. 8334/2160 simplified gives 463/120
6. So, 90/27 + 42/80 = 463/120
   In mixed form: 3103/120

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