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Add 20/84 and 1/7

20/84 + 1/7 is 8/21.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 84 and 7 is 84
  2. For the 1st fraction, since 84 × 1 = 84,
    20/84 = 20 × 1/84 × 1 = 20/84
  3. Likewise, for the 2nd fraction, since 7 × 12 = 84,
    1/7 = 1 × 12/7 × 12 = 12/84
  4. Add the two fractions:
    20/84 + 12/84 = 20 + 12/84 = 32/84
  5. 32/84 simplified gives 8/21
  6. So, 20/84 + 1/7 = 8/21

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