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Subtract 8/18 from 7/5

1st number: 1 2/5, 2nd number: 8/18

7/5 - 8/18 is 43/45.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 5 and 18 is 90
  2. For the 1st fraction, since 5 × 18 = 90,
    7/5 = 7 × 18/5 × 18 = 126/90
  3. Likewise, for the 2nd fraction, since 18 × 5 = 90,
    8/18 = 8 × 5/18 × 5 = 40/90
  4. Subtract the two fractions:
    126/90 - 40/90 = 126 - 40/90 = 86/90
  5. After reducing the fraction, the answer is 43/45

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