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Add 21/42 and 10/24

21/42 + 10/24 is 11/12.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 42 and 24 is 168

    Next, find the equivalent fraction of both fractional numbers with denominator 168
  2. For the 1st fraction, since 42 × 4 = 168,
    21/42 = 21 × 4/42 × 4 = 84/168
  3. Likewise, for the 2nd fraction, since 24 × 7 = 168,
    10/24 = 10 × 7/24 × 7 = 70/168
  4. Add the two like fractions:
    84/168 + 70/168 = 84 + 70/168 = 154/168
  5. 154/168 simplified gives 11/12
  6. So, 21/42 + 10/24 = 11/12

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