Answers

Add 20/84 and 7/5

1^st number: 20/84, 2^nd number: 1 2/5

20/84 + 7/5 is 172/105.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 84 and 5 is 420
   
   Next, find the equivalent fraction of both fractional numbers with denominator 420
2. For the 1st fraction, since 84 × 5 = 420,
   20/84 = 20 × 5/84 × 5 = 100/420
3. Likewise, for the 2nd fraction, since 5 × 84 = 420,
   7/5 = 7 × 84/5 × 84 = 588/420
4. Add the two like fractions:
   100/420 + 588/420 = 100 + 588/420 = 688/420
5. 688/420 simplified gives 172/105
6. So, 20/84 + 7/5 = 172/105
   In mixed form: 167/105

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