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Add 18/42 and 9/25

18/42 + 9/25 is 138/175.

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,
    18/42 = 18 × 25/42 × 25 = 450/1050
  3. Likewise, for the 2nd fraction, since 25 × 42 = 1050,
    9/25 = 9 × 42/25 × 42 = 378/1050
  4. Add the two like fractions:
    450/1050 + 378/1050 = 450 + 378/1050 = 828/1050
  5. 828/1050 simplified gives 138/175
  6. So, 18/42 + 9/25 = 138/175

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