Answers

Add 70/27 and 90/40

1^st number: 2 16/27, 2^nd number: 2 10/40

70/27 + 90/40 is 523/108.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 27 and 40 is 1080
   
   Next, find the equivalent fraction of both fractional numbers with denominator 1080
2. For the 1st fraction, since 27 × 40 = 1080,
   70/27 = 70 × 40/27 × 40 = 2800/1080
3. Likewise, for the 2nd fraction, since 40 × 27 = 1080,
   90/40 = 90 × 27/40 × 27 = 2430/1080
4. Add the two like fractions:
   2800/1080 + 2430/1080 = 2800 + 2430/1080 = 5230/1080
5. 5230/1080 simplified gives 523/108
6. So, 70/27 + 90/40 = 523/108
   In mixed form: 491/108

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