Answers

Add 90/27 and 63/80

1^st number: 3 9/27, 2^nd number: 63/80

90/27 + 63/80 is 989/240.

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,
   63/80 = 63 × 27/80 × 27 = 1701/2160
4. Add the two like fractions:
   7200/2160 + 1701/2160 = 7200 + 1701/2160 = 8901/2160
5. 8901/2160 simplified gives 989/240
6. So, 90/27 + 63/80 = 989/240
   In mixed form: 429/240

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