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Subtract 6/45 from 70/21

1st number: 3 7/21, 2nd number: 6/45

70/21 - 6/45 is 16/5.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 45 is 315

    Next, find the equivalent fraction of both fractional numbers with denominator 315
  2. For the 1st fraction, since 21 × 15 = 315,
    70/21 = 70 × 15/21 × 15 = 1050/315
  3. Likewise, for the 2nd fraction, since 45 × 7 = 315,
    6/45 = 6 × 7/45 × 7 = 42/315
  4. Subtract the two like fractions:
    1050/315 - 42/315 = 1050 - 42/315 = 1008/315
  5. After reducing the fraction, the answer is 16/5
  6. In mixed form: 31/5

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