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Add 4/42 and 12/70

4/42 + 12/70 is 4/15.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 42 and 70 is 210
  2. For the 1st fraction, since 42 × 5 = 210,
    4/42 = 4 × 5/42 × 5 = 20/210
  3. Likewise, for the 2nd fraction, since 70 × 3 = 210,
    12/70 = 12 × 3/70 × 3 = 36/210
  4. Add the two fractions:
    20/210 + 36/210 = 20 + 36/210 = 56/210
  5. After reducing the fraction, the answer is 4/15

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