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Add 20/12 and 4/7

1st number: 1 8/12, 2nd number: 4/7

20/12 + 4/7 is 47/21.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 12 and 7 is 84
  2. For the 1st fraction, since 12 × 7 = 84,
    20/12 = 20 × 7/12 × 7 = 140/84
  3. Likewise, for the 2nd fraction, since 7 × 12 = 84,
    4/7 = 4 × 12/7 × 12 = 48/84
  4. Add the two fractions:
    140/84 + 48/84 = 140 + 48/84 = 188/84
  5. After reducing the fraction, the answer is 47/21
  6. In mixed form: 25/21

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