Answers

Add 90/27 and 45/70

1^st number: 3 9/27, 2^nd number: 45/70

90/27 + 45/70 is 167/42.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 27 and 70 is 1890
   
   Next, find the equivalent fraction of both fractional numbers with denominator 1890
2. For the 1st fraction, since 27 × 70 = 1890,
   90/27 = 90 × 70/27 × 70 = 6300/1890
3. Likewise, for the 2nd fraction, since 70 × 27 = 1890,
   45/70 = 45 × 27/70 × 27 = 1215/1890
4. Add the two like fractions:
   6300/1890 + 1215/1890 = 6300 + 1215/1890 = 7515/1890
5. 7515/1890 simplified gives 167/42
6. So, 90/27 + 45/70 = 167/42
   In mixed form: 341/42

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