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Add 12/30 and 5/40

12/30 + 5/40 is 21/40.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 30 and 40 is 120
  2. For the 1st fraction, since 30 × 4 = 120,
    12/30 = 12 × 4/30 × 4 = 48/120
  3. Likewise, for the 2nd fraction, since 40 × 3 = 120,
    5/40 = 5 × 3/40 × 3 = 15/120
  4. Add the two fractions:
    48/120 + 15/120 = 48 + 15/120 = 63/120
  5. 63/120 simplified gives 21/40
  6. So, 12/30 + 5/40 = 21/40

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