Answers

Add 27/54 and 70/40

1^st number: 27/54, 2^nd number: 1 30/40

27/54 + 70/40 is 9/4.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 54 and 40 is 1080
   
   Next, find the equivalent fraction of both fractional numbers with denominator 1080
2. For the 1st fraction, since 54 × 20 = 1080,
   27/54 = 27 × 20/54 × 20 = 540/1080
3. Likewise, for the 2nd fraction, since 40 × 27 = 1080,
   70/40 = 70 × 27/40 × 27 = 1890/1080
4. Add the two like fractions:
   540/1080 + 1890/1080 = 540 + 1890/1080 = 2430/1080
5. 2430/1080 simplified gives 9/4
6. So, 27/54 + 70/40 = 9/4
   In mixed form: 21/4

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