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Add 20/70 and 10/84

20/70 + 10/84 is 17/42.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 70 and 84 is 420
  2. For the 1st fraction, since 70 × 6 = 420,
    20/70 = 20 × 6/70 × 6 = 120/420
  3. Likewise, for the 2nd fraction, since 84 × 5 = 420,
    10/84 = 10 × 5/84 × 5 = 50/420
  4. Add the two fractions:
    120/420 + 50/420 = 120 + 50/420 = 170/420
  5. After reducing the fraction, the answer is 17/42

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