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Add 21/42 and 10/50

21/42 + 10/50 is 7/10.

Steps for adding fractions

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

    Next, find the equivalent fraction of both fractional numbers with denominator 1050
  2. For the 1st fraction, since 42 × 25 = 1050,
    21/42 = 21 × 25/42 × 25 = 525/1050
  3. Likewise, for the 2nd fraction, since 50 × 21 = 1050,
    10/50 = 10 × 21/50 × 21 = 210/1050
  4. Add the two like fractions:
    525/1050 + 210/1050 = 525 + 210/1050 = 735/1050
  5. 735/1050 simplified gives 7/10
  6. So, 21/42 + 10/50 = 7/10

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