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Add 30/40 and 12/8

1st number: 30/40, 2nd number: 1 4/8

30/40 + 12/8 is 9/4.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 40 and 8 is 40
  2. For the 1st fraction, since 40 × 1 = 40,
    30/40 = 30 × 1/40 × 1 = 30/40
  3. Likewise, for the 2nd fraction, since 8 × 5 = 40,
    12/8 = 12 × 5/8 × 5 = 60/40
  4. Add the two fractions:
    30/40 + 60/40 = 30 + 60/40 = 90/40
  5. After reducing the fraction, the answer is 9/4
  6. In mixed form: 21/4

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