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Add 12/21 and 40/20

1st number: 12/21, 2nd number: 2 0/20

12/21 + 40/20 is 18/7.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 20 is 420

    Next, find the equivalent fraction of both fractional numbers with denominator 420
  2. For the 1st fraction, since 21 × 20 = 420,
    12/21 = 12 × 20/21 × 20 = 240/420
  3. Likewise, for the 2nd fraction, since 20 × 21 = 420,
    40/20 = 40 × 21/20 × 21 = 840/420
  4. Add the two like fractions:
    240/420 + 840/420 = 240 + 840/420 = 1080/420
  5. 1080/420 simplified gives 18/7
  6. So, 12/21 + 40/20 = 18/7
    In mixed form: 24/7

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