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Subtract 90/20 from 50/7

1st number: 7 1/7, 2nd number: 4 10/20

50/7 - 90/20 is 37/14.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 7 and 20 is 140
  2. For the 1st fraction, since 7 × 20 = 140,
    50/7 = 50 × 20/7 × 20 = 1000/140
  3. Likewise, for the 2nd fraction, since 20 × 7 = 140,
    90/20 = 90 × 7/20 × 7 = 630/140
  4. Subtract the two fractions:
    1000/140 - 630/140 = 1000 - 630/140 = 370/140
  5. After reducing the fraction, the answer is 37/14
  6. In mixed form: 29/14

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