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Add 27/70 and 15/20

27/70 + 15/20 is 159/140.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 70 and 20 is 140

    Next, find the equivalent fraction of both fractional numbers with denominator 140
  2. For the 1st fraction, since 70 × 2 = 140,
    27/70 = 27 × 2/70 × 2 = 54/140
  3. Likewise, for the 2nd fraction, since 20 × 7 = 140,
    15/20 = 15 × 7/20 × 7 = 105/140
  4. Add the two like fractions:
    54/140 + 105/140 = 54 + 105/140 = 159/140
  5. So, 27/70 + 15/20 = 159/140
    In mixed form: 119/140

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