Answers

Add 42/20 and 30/84

1^st number: 2 2/20, 2^nd number: 30/84

42/20 + 30/84 is 86/35.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 20 and 84 is 420
   
   Next, find the equivalent fraction of both fractional numbers with denominator 420
2. For the 1st fraction, since 20 × 21 = 420,
   42/20 = 42 × 21/20 × 21 = 882/420
3. Likewise, for the 2nd fraction, since 84 × 5 = 420,
   30/84 = 30 × 5/84 × 5 = 150/420
4. Add the two like fractions:
   882/420 + 150/420 = 882 + 150/420 = 1032/420
5. 1032/420 simplified gives 86/35
6. So, 42/20 + 30/84 = 86/35
   In mixed form: 216/35

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