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Add 20/24 and 42/70

20/24 + 42/70 is 43/30.

Steps for adding fractions

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

    Next, find the equivalent fraction of both fractional numbers with denominator 840
  2. For the 1st fraction, since 24 × 35 = 840,
    20/24 = 20 × 35/24 × 35 = 700/840
  3. Likewise, for the 2nd fraction, since 70 × 12 = 840,
    42/70 = 42 × 12/70 × 12 = 504/840
  4. Add the two like fractions:
    700/840 + 504/840 = 700 + 504/840 = 1204/840
  5. 1204/840 simplified gives 43/30
  6. So, 20/24 + 42/70 = 43/30
    In mixed form: 113/30

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