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Add 60/81 and 21/70

60/81 + 21/70 is 281/270.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 81 and 70 is 5670
  2. For the 1st fraction, since 81 × 70 = 5670,
    60/81 = 60 × 70/81 × 70 = 4200/5670
  3. Likewise, for the 2nd fraction, since 70 × 81 = 5670,
    21/70 = 21 × 81/70 × 81 = 1701/5670
  4. Add the two fractions:
    4200/5670 + 1701/5670 = 4200 + 1701/5670 = 5901/5670
  5. After reducing the fraction, the answer is 281/270
  6. In mixed form: 111/270

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