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Add 7/20 and 27/84

7/20 + 27/84 is 47/70.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 20 and 84 is 420
  2. For the 1st fraction, since 20 × 21 = 420,
    7/20 = 7 × 21/20 × 21 = 147/420
  3. Likewise, for the 2nd fraction, since 84 × 5 = 420,
    27/84 = 27 × 5/84 × 5 = 135/420
  4. Add the two fractions:
    147/420 + 135/420 = 147 + 135/420 = 282/420
  5. After reducing the fraction, the answer is 47/70

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