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Add 12/45 and 28/72

12/45 + 28/72 is 59/90.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 45 and 72 is 360

    Next, find the equivalent fraction of both fractional numbers with denominator 360
  2. For the 1st fraction, since 45 × 8 = 360,
    12/45 = 12 × 8/45 × 8 = 96/360
  3. Likewise, for the 2nd fraction, since 72 × 5 = 360,
    28/72 = 28 × 5/72 × 5 = 140/360
  4. Add the two like fractions:
    96/360 + 140/360 = 96 + 140/360 = 236/360
  5. 236/360 simplified gives 59/90
  6. So, 12/45 + 28/72 = 59/90

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