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Add 21/50 and 18/42

21/50 + 18/42 is 297/350.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 50 and 42 is 1050

    Next, find the equivalent fraction of both fractional numbers with denominator 1050
  2. For the 1st fraction, since 50 × 21 = 1050,
    21/50 = 21 × 21/50 × 21 = 441/1050
  3. Likewise, for the 2nd fraction, since 42 × 25 = 1050,
    18/42 = 18 × 25/42 × 25 = 450/1050
  4. Add the two like fractions:
    441/1050 + 450/1050 = 441 + 450/1050 = 891/1050
  5. 891/1050 simplified gives 297/350
  6. So, 21/50 + 18/42 = 297/350

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