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Add 12/40 and 4/18

12/40 + 4/18 is 47/90.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 40 and 18 is 360
  2. For the 1st fraction, since 40 × 9 = 360,
    12/40 = 12 × 9/40 × 9 = 108/360
  3. Likewise, for the 2nd fraction, since 18 × 20 = 360,
    4/18 = 4 × 20/18 × 20 = 80/360
  4. Add the two fractions:
    108/360 + 80/360 = 108 + 80/360 = 188/360
  5. After reducing the fraction, the answer is 47/90

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