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Add 21/24 and 18/70

21/24 + 18/70 is 317/280.

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,
    21/24 = 21 × 35/24 × 35 = 735/840
  3. Likewise, for the 2nd fraction, since 70 × 12 = 840,
    18/70 = 18 × 12/70 × 12 = 216/840
  4. Add the two like fractions:
    735/840 + 216/840 = 735 + 216/840 = 951/840
  5. 951/840 simplified gives 317/280
  6. So, 21/24 + 18/70 = 317/280
    In mixed form: 137/280

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