Answers

Add 20/84 and 7/49

20/84 + 7/49 is 8/21.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 84 and 49 is 588
   
   Next, find the equivalent fraction of both fractional numbers with denominator 588
2. For the 1st fraction, since 84 × 7 = 588,
   20/84 = 20 × 7/84 × 7 = 140/588
3. Likewise, for the 2nd fraction, since 49 × 12 = 588,
   7/49 = 7 × 12/49 × 12 = 84/588
4. Add the two like fractions:
   140/588 + 84/588 = 140 + 84/588 = 224/588
5. 224/588 simplified gives 8/21
6. So, 20/84 + 7/49 = 8/21

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