Answers

Add 30/20 and 42/4

1^st number: 1 10/20, 2^nd number: 10 2/4

30/20 + 42/4 is 12/1.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 20 and 4 is 20
   
   Next, find the equivalent fraction of both fractional numbers with denominator 20
2. For the 1st fraction, since 20 × 1 = 20,
   30/20 = 30 × 1/20 × 1 = 30/20
3. Likewise, for the 2nd fraction, since 4 × 5 = 20,
   42/4 = 42 × 5/4 × 5 = 210/20
4. Add the two like fractions:
   30/20 + 210/20 = 30 + 210/20 = 240/20
5. 240/20 simplified gives 12/1
6. So, 30/20 + 42/4 = 12/1

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