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Subtract 18/7 from 10/5

1st number: 2 0/5, 2nd number: 2 4/7

10/5 - 18/7 is -4/7.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 5 and 7 is 35

    Next, find the equivalent fraction of both fractional numbers with denominator 35
  2. For the 1st fraction, since 5 × 7 = 35,
    10/5 = 10 × 7/5 × 7 = 70/35
  3. Likewise, for the 2nd fraction, since 7 × 5 = 35,
    18/7 = 18 × 5/7 × 5 = 90/35
  4. Subtract the two like fractions:
    70/35 - 90/35 = 70 - 90/35 = -20/35
  5. After reducing the fraction, the answer is -4/7

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