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Add 15/42 and 20/8

1st number: 15/42, 2nd number: 2 4/8

15/42 + 20/8 is 20/7.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 42 and 8 is 168

    Next, find the equivalent fraction of both fractional numbers with denominator 168
  2. For the 1st fraction, since 42 × 4 = 168,
    15/42 = 15 × 4/42 × 4 = 60/168
  3. Likewise, for the 2nd fraction, since 8 × 21 = 168,
    20/8 = 20 × 21/8 × 21 = 420/168
  4. Add the two like fractions:
    60/168 + 420/168 = 60 + 420/168 = 480/168
  5. 480/168 simplified gives 20/7
  6. So, 15/42 + 20/8 = 20/7
    In mixed form: 26/7

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