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Add 20/56 and 42/54

20/56 + 42/54 is 143/126.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 56 and 54 is 1512

    Next, find the equivalent fraction of both fractional numbers with denominator 1512
  2. For the 1st fraction, since 56 × 27 = 1512,
    20/56 = 20 × 27/56 × 27 = 540/1512
  3. Likewise, for the 2nd fraction, since 54 × 28 = 1512,
    42/54 = 42 × 28/54 × 28 = 1176/1512
  4. Add the two like fractions:
    540/1512 + 1176/1512 = 540 + 1176/1512 = 1716/1512
  5. 1716/1512 simplified gives 143/126
  6. So, 20/56 + 42/54 = 143/126
    In mixed form: 117/126

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