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Add 1/42 and 45/70

1/42 + 45/70 is 2/3.

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,
    1/42 = 1 × 5/42 × 5 = 5/210
  3. Likewise, for the 2nd fraction, since 70 × 3 = 210,
    45/70 = 45 × 3/70 × 3 = 135/210
  4. Add the two fractions:
    5/210 + 135/210 = 5 + 135/210 = 140/210
  5. 140/210 simplified gives 2/3
  6. So, 1/42 + 45/70 = 2/3

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