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Add 21/42 and 18/25

21/42 + 18/25 is 61/50.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 42 and 25 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 25 × 42 = 1050,
    18/25 = 18 × 42/25 × 42 = 756/1050
  4. Add the two like fractions:
    525/1050 + 756/1050 = 525 + 756/1050 = 1281/1050
  5. 1281/1050 simplified gives 61/50
  6. So, 21/42 + 18/25 = 61/50
    In mixed form: 111/50

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