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Add 1/42 and 20/15

1st number: 1/42, 2nd number: 1 5/15

1/42 + 20/15 is 19/14.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 42 and 15 is 210

    Next, find the equivalent fraction of both fractional numbers with denominator 210
  2. For the 1st fraction, since 42 × 5 = 210,
    1/42 = 1 × 5/42 × 5 = 5/210
  3. Likewise, for the 2nd fraction, since 15 × 14 = 210,
    20/15 = 20 × 14/15 × 14 = 280/210
  4. Add the two like fractions:
    5/210 + 280/210 = 5 + 280/210 = 285/210
  5. 285/210 simplified gives 19/14
  6. So, 1/42 + 20/15 = 19/14
    In mixed form: 15/14

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