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Add 42/21 and 16/20

1st number: 2 0/21, 2nd number: 16/20

42/21 + 16/20 is 14/5.

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,
    42/21 = 42 × 20/21 × 20 = 840/420
  3. Likewise, for the 2nd fraction, since 20 × 21 = 420,
    16/20 = 16 × 21/20 × 21 = 336/420
  4. Add the two like fractions:
    840/420 + 336/420 = 840 + 336/420 = 1176/420
  5. 1176/420 simplified gives 14/5
  6. So, 42/21 + 16/20 = 14/5
    In mixed form: 24/5

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