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Add 28/15 and 20/40

1st number: 1 13/15, 2nd number: 20/40

28/15 + 20/40 is 71/30.

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,
    28/15 = 28 × 8/15 × 8 = 224/120
  3. Likewise, for the 2nd fraction, since 40 × 3 = 120,
    20/40 = 20 × 3/40 × 3 = 60/120
  4. Add the two like fractions:
    224/120 + 60/120 = 224 + 60/120 = 284/120
  5. 284/120 simplified gives 71/30
  6. So, 28/15 + 20/40 = 71/30
    In mixed form: 211/30

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