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Add 42/70 and 18/24

42/70 + 18/24 is 27/20.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 70 and 24 is 840

    Next, find the equivalent fraction of both fractional numbers with denominator 840
  2. For the 1st fraction, since 70 × 12 = 840,
    42/70 = 42 × 12/70 × 12 = 504/840
  3. Likewise, for the 2nd fraction, since 24 × 35 = 840,
    18/24 = 18 × 35/24 × 35 = 630/840
  4. Add the two like fractions:
    504/840 + 630/840 = 504 + 630/840 = 1134/840
  5. 1134/840 simplified gives 27/20
  6. So, 42/70 + 18/24 = 27/20
    In mixed form: 17/20

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