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Add 12/18 and 15/40

12/18 + 15/40 is 25/24.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 18 and 40 is 360
  2. For the 1st fraction, since 18 × 20 = 360,
    12/18 = 12 × 20/18 × 20 = 240/360
  3. Likewise, for the 2nd fraction, since 40 × 9 = 360,
    15/40 = 15 × 9/40 × 9 = 135/360
  4. Add the two fractions:
    240/360 + 135/360 = 240 + 135/360 = 375/360
  5. 375/360 simplified gives 25/24
  6. So, 12/18 + 15/40 = 25/24
    In mixed form: 11/24

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