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Add 42/56 and 9/15

42/56 + 9/15 is 27/20.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 56 and 15 is 840

    Next, find the equivalent fraction of both fractional numbers with denominator 840
  2. For the 1st fraction, since 56 × 15 = 840,
    42/56 = 42 × 15/56 × 15 = 630/840
  3. Likewise, for the 2nd fraction, since 15 × 56 = 840,
    9/15 = 9 × 56/15 × 56 = 504/840
  4. Add the two like fractions:
    630/840 + 504/840 = 630 + 504/840 = 1134/840
  5. 1134/840 simplified gives 27/20
  6. So, 42/56 + 9/15 = 27/20
    In mixed form: 17/20

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