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Add 20/40 and 12/45

20/40 + 12/45 is 23/30.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 40 and 45 is 360
  2. For the 1st fraction, since 40 × 9 = 360,
    20/40 = 20 × 9/40 × 9 = 180/360
  3. Likewise, for the 2nd fraction, since 45 × 8 = 360,
    12/45 = 12 × 8/45 × 8 = 96/360
  4. Add the two fractions:
    180/360 + 96/360 = 180 + 96/360 = 276/360
  5. 276/360 simplified gives 23/30
  6. So, 20/40 + 12/45 = 23/30

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