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Add 18/72 and 75/90

18/72 + 75/90 is 13/12.

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,
    18/72 = 18 × 5/72 × 5 = 90/360
  3. Likewise, for the 2nd fraction, since 90 × 4 = 360,
    75/90 = 75 × 4/90 × 4 = 300/360
  4. Add the two like fractions:
    90/360 + 300/360 = 90 + 300/360 = 390/360
  5. 390/360 simplified gives 13/12
  6. So, 18/72 + 75/90 = 13/12
    In mixed form: 11/12

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