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Add 36/40 and 42/84

36/40 + 42/84 is 7/5.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 40 and 84 is 840

    Next, find the equivalent fraction of both fractional numbers with denominator 840
  2. For the 1st fraction, since 40 × 21 = 840,
    36/40 = 36 × 21/40 × 21 = 756/840
  3. Likewise, for the 2nd fraction, since 84 × 10 = 840,
    42/84 = 42 × 10/84 × 10 = 420/840
  4. Add the two like fractions:
    756/840 + 420/840 = 756 + 420/840 = 1176/840
  5. 1176/840 simplified gives 7/5
  6. So, 36/40 + 42/84 = 7/5
    In mixed form: 12/5

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