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Add 15/4 and 30/40

1st number: 3 3/4, 2nd number: 30/40

15/4 + 30/40 is 9/2.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 4 and 40 is 40

    Next, find the equivalent fraction of both fractional numbers with denominator 40
  2. For the 1st fraction, since 4 × 10 = 40,
    15/4 = 15 × 10/4 × 10 = 150/40
  3. Likewise, for the 2nd fraction, since 40 × 1 = 40,
    30/40 = 30 × 1/40 × 1 = 30/40
  4. Add the two like fractions:
    150/40 + 30/40 = 150 + 30/40 = 180/40
  5. 180/40 simplified gives 9/2
  6. So, 15/4 + 30/40 = 9/2
    In mixed form: 41/2

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