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Add 20/21 and 42/16

1st number: 20/21, 2nd number: 2 10/16

20/21 + 42/16 is 601/168.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 16 is 336

    Next, find the equivalent fraction of both fractional numbers with denominator 336
  2. For the 1st fraction, since 21 × 16 = 336,
    20/21 = 20 × 16/21 × 16 = 320/336
  3. Likewise, for the 2nd fraction, since 16 × 21 = 336,
    42/16 = 42 × 21/16 × 21 = 882/336
  4. Add the two like fractions:
    320/336 + 882/336 = 320 + 882/336 = 1202/336
  5. 1202/336 simplified gives 601/168
  6. So, 20/21 + 42/16 = 601/168
    In mixed form: 397/168

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