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Add 50/70 and 21/36

50/70 + 21/36 is 109/84.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 70 and 36 is 1260

    Next, find the equivalent fraction of both fractional numbers with denominator 1260
  2. For the 1st fraction, since 70 × 18 = 1260,
    50/70 = 50 × 18/70 × 18 = 900/1260
  3. Likewise, for the 2nd fraction, since 36 × 35 = 1260,
    21/36 = 21 × 35/36 × 35 = 735/1260
  4. Add the two like fractions:
    900/1260 + 735/1260 = 900 + 735/1260 = 1635/1260
  5. 1635/1260 simplified gives 109/84
  6. So, 50/70 + 21/36 = 109/84
    In mixed form: 125/84

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