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Add 3/70 and 21/72

3/70 + 21/72 is 281/840.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 70 and 72 is 2520

    Next, find the equivalent fraction of both fractional numbers with denominator 2520
  2. For the 1st fraction, since 70 × 36 = 2520,
    3/70 = 3 × 36/70 × 36 = 108/2520
  3. Likewise, for the 2nd fraction, since 72 × 35 = 2520,
    21/72 = 21 × 35/72 × 35 = 735/2520
  4. Add the two like fractions:
    108/2520 + 735/2520 = 108 + 735/2520 = 843/2520
  5. 843/2520 simplified gives 281/840
  6. So, 3/70 + 21/72 = 281/840

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