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Add 7/20 and 4/40

7/20 + 4/40 is 9/20.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 20 and 40 is 40

    Next, find the equivalent fraction of both fractional numbers with denominator 40
  2. For the 1st fraction, since 20 × 2 = 40,
    7/20 = 7 × 2/20 × 2 = 14/40
  3. Likewise, for the 2nd fraction, since 40 × 1 = 40,
    4/40 = 4 × 1/40 × 1 = 4/40
  4. Add the two like fractions:
    14/40 + 4/40 = 14 + 4/40 = 18/40
  5. 18/40 simplified gives 9/20
  6. So, 7/20 + 4/40 = 9/20

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