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Add 3/12 and 54/70

3/12 + 54/70 is 143/140.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 12 and 70 is 420

    Next, find the equivalent fraction of both fractional numbers with denominator 420
  2. For the 1st fraction, since 12 × 35 = 420,
    3/12 = 3 × 35/12 × 35 = 105/420
  3. Likewise, for the 2nd fraction, since 70 × 6 = 420,
    54/70 = 54 × 6/70 × 6 = 324/420
  4. Add the two like fractions:
    105/420 + 324/420 = 105 + 324/420 = 429/420
  5. 429/420 simplified gives 143/140
  6. So, 3/12 + 54/70 = 143/140
    In mixed form: 13/140

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