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Add 7/40 and 27/84

7/40 + 27/84 is 139/280.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 40 and 84 is 840

    Next, find the equivalent fraction of both fractional numbers with denominator 840
  2. For the 1st fraction, since 40 × 21 = 840,
    7/40 = 7 × 21/40 × 21 = 147/840
  3. Likewise, for the 2nd fraction, since 84 × 10 = 840,
    27/84 = 27 × 10/84 × 10 = 270/840
  4. Add the two like fractions:
    147/840 + 270/840 = 147 + 270/840 = 417/840
  5. 417/840 simplified gives 139/280
  6. So, 7/40 + 27/84 = 139/280

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