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Add 5/15 and 70/84

5/15 + 70/84 is 7/6.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 15 and 84 is 420

    Next, find the equivalent fraction of both fractional numbers with denominator 420
  2. For the 1st fraction, since 15 × 28 = 420,
    5/15 = 5 × 28/15 × 28 = 140/420
  3. Likewise, for the 2nd fraction, since 84 × 5 = 420,
    70/84 = 70 × 5/84 × 5 = 350/420
  4. Add the two like fractions:
    140/420 + 350/420 = 140 + 350/420 = 490/420
  5. 490/420 simplified gives 7/6
  6. So, 5/15 + 70/84 = 7/6
    In mixed form: 11/6

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