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Subtract 56/70 from 21/8

1st number: 2 5/8, 2nd number: 56/70

21/8 - 56/70 is 73/40.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 8 and 70 is 280

    Next, find the equivalent fraction of both fractional numbers with denominator 280
  2. For the 1st fraction, since 8 × 35 = 280,
    21/8 = 21 × 35/8 × 35 = 735/280
  3. Likewise, for the 2nd fraction, since 70 × 4 = 280,
    56/70 = 56 × 4/70 × 4 = 224/280
  4. Subtract the two like fractions:
    735/280 - 224/280 = 735 - 224/280 = 511/280
  5. After reducing the fraction, the answer is 73/40
  6. In mixed form: 133/40

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