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Add 21/14 and 12/20

1st number: 1 7/14, 2nd number: 12/20

21/14 + 12/20 is 21/10.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 14 and 20 is 140

    Next, find the equivalent fraction of both fractional numbers with denominator 140
  2. For the 1st fraction, since 14 × 10 = 140,
    21/14 = 21 × 10/14 × 10 = 210/140
  3. Likewise, for the 2nd fraction, since 20 × 7 = 140,
    12/20 = 12 × 7/20 × 7 = 84/140
  4. Add the two like fractions:
    210/140 + 84/140 = 210 + 84/140 = 294/140
  5. 294/140 simplified gives 21/10
  6. So, 21/14 + 12/20 = 21/10
    In mixed form: 21/10

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