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Add 20/42 and 15/54

20/42 + 15/54 is 95/126.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 42 and 54 is 378
  2. For the 1st fraction, since 42 × 9 = 378,
    20/42 = 20 × 9/42 × 9 = 180/378
  3. Likewise, for the 2nd fraction, since 54 × 7 = 378,
    15/54 = 15 × 7/54 × 7 = 105/378
  4. Add the two fractions:
    180/378 + 105/378 = 180 + 105/378 = 285/378
  5. After reducing the fraction, the answer is 95/126

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