Answers

Add 4/28 and 20/84

4/28 + 20/84 is 8/21.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 28 and 84 is 84
   
   Next, find the equivalent fraction of both fractional numbers with denominator 84
2. For the 1st fraction, since 28 × 3 = 84,
   4/28 = 4 × 3/28 × 3 = 12/84
3. Likewise, for the 2nd fraction, since 84 × 1 = 84,
   20/84 = 20 × 1/84 × 1 = 20/84
4. Add the two like fractions:
   12/84 + 20/84 = 12 + 20/84 = 32/84
5. 32/84 simplified gives 8/21
6. So, 4/28 + 20/84 = 8/21

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