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Add 8/40 and 3/42

8/40 + 3/42 is 19/70.

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,
    8/40 = 8 × 21/40 × 21 = 168/840
  3. Likewise, for the 2nd fraction, since 42 × 20 = 840,
    3/42 = 3 × 20/42 × 20 = 60/840
  4. Add the two like fractions:
    168/840 + 60/840 = 168 + 60/840 = 228/840
  5. 228/840 simplified gives 19/70
  6. So, 8/40 + 3/42 = 19/70

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