Answers

Add 36/84 and 21/20

1^st number: 36/84, 2^nd number: 1 1/20

36/84 + 21/20 is 207/140.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 84 and 20 is 420
   
   Next, find the equivalent fraction of both fractional numbers with denominator 420
2. For the 1st fraction, since 84 × 5 = 420,
   36/84 = 36 × 5/84 × 5 = 180/420
3. Likewise, for the 2nd fraction, since 20 × 21 = 420,
   21/20 = 21 × 21/20 × 21 = 441/420
4. Add the two like fractions:
   180/420 + 441/420 = 180 + 441/420 = 621/420
5. 621/420 simplified gives 207/140
6. So, 36/84 + 21/20 = 207/140
   In mixed form: 167/140

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