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Add 36/84 and 21/70

36/84 + 21/70 is 51/70.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 84 and 70 is 420

    Next, find the equivalent fraction of both fractional numbers with denominator 420
  2. For the 1st fraction, since 84 × 5 = 420,
    36/84 = 36 × 5/84 × 5 = 180/420
  3. Likewise, for the 2nd fraction, since 70 × 6 = 420,
    21/70 = 21 × 6/70 × 6 = 126/420
  4. Add the two like fractions:
    180/420 + 126/420 = 180 + 126/420 = 306/420
  5. 306/420 simplified gives 51/70
  6. So, 36/84 + 21/70 = 51/70

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