Answers

Add 20/54 and 40/15

1^st number: 20/54, 2^nd number: 2 10/15

20/54 + 40/15 is 82/27.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 54 and 15 is 270
   
   Next, find the equivalent fraction of both fractional numbers with denominator 270
2. For the 1st fraction, since 54 × 5 = 270,
   20/54 = 20 × 5/54 × 5 = 100/270
3. Likewise, for the 2nd fraction, since 15 × 18 = 270,
   40/15 = 40 × 18/15 × 18 = 720/270
4. Add the two like fractions:
   100/270 + 720/270 = 100 + 720/270 = 820/270
5. 820/270 simplified gives 82/27
6. So, 20/54 + 40/15 = 82/27
   In mixed form: 31/27

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