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Add 21/84 and 15/50

21/84 + 15/50 is 11/20.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 84 and 50 is 2100

    Next, find the equivalent fraction of both fractional numbers with denominator 2100
  2. For the 1st fraction, since 84 × 25 = 2100,
    21/84 = 21 × 25/84 × 25 = 525/2100
  3. Likewise, for the 2nd fraction, since 50 × 42 = 2100,
    15/50 = 15 × 42/50 × 42 = 630/2100
  4. Add the two like fractions:
    525/2100 + 630/2100 = 525 + 630/2100 = 1155/2100
  5. 1155/2100 simplified gives 11/20
  6. So, 21/84 + 15/50 = 11/20

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