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Add 25/42 and 28/40

25/42 + 28/40 is 136/105.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 42 and 40 is 840

    Next, find the equivalent fraction of both fractional numbers with denominator 840
  2. For the 1st fraction, since 42 × 20 = 840,
    25/42 = 25 × 20/42 × 20 = 500/840
  3. Likewise, for the 2nd fraction, since 40 × 21 = 840,
    28/40 = 28 × 21/40 × 21 = 588/840
  4. Add the two like fractions:
    500/840 + 588/840 = 500 + 588/840 = 1088/840
  5. 1088/840 simplified gives 136/105
  6. So, 25/42 + 28/40 = 136/105
    In mixed form: 131/105

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