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Subtract 90/70 from 50/7

1st number: 7 1/7, 2nd number: 1 20/70

50/7 - 90/70 is 41/7.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 7 and 70 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 70 × 1 = 70,
    90/70 = 90 × 1/70 × 1 = 90/70
  4. Subtract the two fractions:
    500/70 - 90/70 = 500 - 90/70 = 410/70
  5. After reducing the fraction, the answer is 41/7
  6. In mixed form: 56/7

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