Answers

Add 20/12 and 75/54

1^st number: 1 8/12, 2^nd number: 1 21/54

20/12 + 75/54 is 55/18.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 12 and 54 is 108
   
   Next, find the equivalent fraction of both fractional numbers with denominator 108
2. For the 1st fraction, since 12 × 9 = 108,
   20/12 = 20 × 9/12 × 9 = 180/108
3. Likewise, for the 2nd fraction, since 54 × 2 = 108,
   75/54 = 75 × 2/54 × 2 = 150/108
4. Add the two like fractions:
   180/108 + 150/108 = 180 + 150/108 = 330/108
5. 330/108 simplified gives 55/18
6. So, 20/12 + 75/54 = 55/18
   In mixed form: 31/18

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