Answers

Add 90/27 and 15/90

1^st number: 3 9/27, 2^nd number: 15/90

90/27 + 15/90 is 7/2.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 27 and 90 is 270
   
   Next, find the equivalent fraction of both fractional numbers with denominator 270
2. For the 1st fraction, since 27 × 10 = 270,
   90/27 = 90 × 10/27 × 10 = 900/270
3. Likewise, for the 2nd fraction, since 90 × 3 = 270,
   15/90 = 15 × 3/90 × 3 = 45/270
4. Add the two like fractions:
   900/270 + 45/270 = 900 + 45/270 = 945/270
5. 945/270 simplified gives 7/2
6. So, 90/27 + 15/90 = 7/2
   In mixed form: 31/2

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