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Add 6/7 and 6/20

6/7 + 6/20 is 81/70.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 7 and 20 is 140
  2. For the 1st fraction, since 7 × 20 = 140,
    6/7 = 6 × 20/7 × 20 = 120/140
  3. Likewise, for the 2nd fraction, since 20 × 7 = 140,
    6/20 = 6 × 7/20 × 7 = 42/140
  4. Add the two fractions:
    120/140 + 42/140 = 120 + 42/140 = 162/140
  5. 162/140 simplified gives 81/70
  6. So, 6/7 + 6/20 = 81/70
    In mixed form: 111/70

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