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Add 25/40 and 4/42

25/40 + 4/42 is 121/168.

Steps for adding fractions

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

    Next, find the equivalent fraction of both fractional numbers with denominator 840
  2. For the 1st fraction, since 40 × 21 = 840,
    25/40 = 25 × 21/40 × 21 = 525/840
  3. Likewise, for the 2nd fraction, since 42 × 20 = 840,
    4/42 = 4 × 20/42 × 20 = 80/840
  4. Add the two like fractions:
    525/840 + 80/840 = 525 + 80/840 = 605/840
  5. 605/840 simplified gives 121/168
  6. So, 25/40 + 4/42 = 121/168

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