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Add 3/20 and 7/45

3/20 + 7/45 is 11/36.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 20 and 45 is 180

    Next, find the equivalent fraction of both fractional numbers with denominator 180
  2. For the 1st fraction, since 20 × 9 = 180,
    3/20 = 3 × 9/20 × 9 = 27/180
  3. Likewise, for the 2nd fraction, since 45 × 4 = 180,
    7/45 = 7 × 4/45 × 4 = 28/180
  4. Add the two like fractions:
    27/180 + 28/180 = 27 + 28/180 = 55/180
  5. 55/180 simplified gives 11/36
  6. So, 3/20 + 7/45 = 11/36

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