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Add 1/70 and 42/81

1/70 + 42/81 is 1007/1890.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 70 and 81 is 5670
  2. For the 1st fraction, since 70 × 81 = 5670,
    1/70 = 1 × 81/70 × 81 = 81/5670
  3. Likewise, for the 2nd fraction, since 81 × 70 = 5670,
    42/81 = 42 × 70/81 × 70 = 2940/5670
  4. Add the two fractions:
    81/5670 + 2940/5670 = 81 + 2940/5670 = 3021/5670
  5. 3021/5670 simplified gives 1007/1890
  6. So, 1/70 + 42/81 = 1007/1890

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