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Subtract 90/10 from 50/7

1st number: 7 1/7, 2nd number: 9 0/10

50/7 - 90/10 is -13/7.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 7 and 10 is 70
  2. For the 1st fraction, since 7 × 10 = 70,
    50/7 = 50 × 10/7 × 10 = 500/70
  3. Likewise, for the 2nd fraction, since 10 × 7 = 70,
    90/10 = 90 × 7/10 × 7 = 630/70
  4. Subtract the two fractions:
    500/70 - 630/70 = 500 - 630/70 = -130/70
  5. After reducing the fraction, the answer is -13/7

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