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Add 15/45 and 5/20

15/45 + 5/20 is 7/12.

Steps for adding fractions

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

    Next, find the equivalent fraction of both fractional numbers with denominator 180
  2. For the 1st fraction, since 45 × 4 = 180,
    15/45 = 15 × 4/45 × 4 = 60/180
  3. Likewise, for the 2nd fraction, since 20 × 9 = 180,
    5/20 = 5 × 9/20 × 9 = 45/180
  4. Add the two like fractions:
    60/180 + 45/180 = 60 + 45/180 = 105/180
  5. 105/180 simplified gives 7/12
  6. So, 15/45 + 5/20 = 7/12

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