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Subtract 1/49 from 70/21

1st number: 3 7/21, 2nd number: 1/49

70/21 - 1/49 is 487/147.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 49 is 147

    Next, find the equivalent fraction of both fractional numbers with denominator 147
  2. For the 1st fraction, since 21 × 7 = 147,
    70/21 = 70 × 7/21 × 7 = 490/147
  3. Likewise, for the 2nd fraction, since 49 × 3 = 147,
    1/49 = 1 × 3/49 × 3 = 3/147
  4. Subtract the two like fractions:
    490/147 - 3/147 = 490 - 3/147 = 487/147
  5. In mixed form: 346/147

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