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Add 12/72 and 18/90

12/72 + 18/90 is 11/30.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 72 and 90 is 360

    Next, find the equivalent fraction of both fractional numbers with denominator 360
  2. For the 1st fraction, since 72 × 5 = 360,
    12/72 = 12 × 5/72 × 5 = 60/360
  3. Likewise, for the 2nd fraction, since 90 × 4 = 360,
    18/90 = 18 × 4/90 × 4 = 72/360
  4. Add the two like fractions:
    60/360 + 72/360 = 60 + 72/360 = 132/360
  5. 132/360 simplified gives 11/30
  6. So, 12/72 + 18/90 = 11/30

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