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Add 3/15 and 28/40

3/15 + 28/40 is 9/10.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 15 and 40 is 120

    Next, find the equivalent fraction of both fractional numbers with denominator 120
  2. For the 1st fraction, since 15 × 8 = 120,
    3/15 = 3 × 8/15 × 8 = 24/120
  3. Likewise, for the 2nd fraction, since 40 × 3 = 120,
    28/40 = 28 × 3/40 × 3 = 84/120
  4. Add the two like fractions:
    24/120 + 84/120 = 24 + 84/120 = 108/120
  5. 108/120 simplified gives 9/10
  6. So, 3/15 + 28/40 = 9/10

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