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Add 7/21 and 12/56

7/21 + 12/56 is 23/42.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 56 is 168
  2. For the 1st fraction, since 21 × 8 = 168,
    7/21 = 7 × 8/21 × 8 = 56/168
  3. Likewise, for the 2nd fraction, since 56 × 3 = 168,
    12/56 = 12 × 3/56 × 3 = 36/168
  4. Add the two fractions:
    56/168 + 36/168 = 56 + 36/168 = 92/168
  5. After reducing the fraction, the answer is 23/42

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