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Add 12/42 and 70/21

1st number: 12/42, 2nd number: 3 7/21

12/42 + 70/21 is 76/21.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 42 and 21 is 42

    Next, find the equivalent fraction of both fractional numbers with denominator 42
  2. For the 1st fraction, since 42 × 1 = 42,
    12/42 = 12 × 1/42 × 1 = 12/42
  3. Likewise, for the 2nd fraction, since 21 × 2 = 42,
    70/21 = 70 × 2/21 × 2 = 140/42
  4. Add the two like fractions:
    12/42 + 140/42 = 12 + 140/42 = 152/42
  5. 152/42 simplified gives 76/21
  6. So, 12/42 + 70/21 = 76/21
    In mixed form: 313/21

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