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Subtract 45/70 from 50/20

1st number: 2 10/20, 2nd number: 45/70

50/20 - 45/70 is 13/7.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 20 and 70 is 140

    Next, find the equivalent fraction of both fractional numbers with denominator 140
  2. For the 1st fraction, since 20 × 7 = 140,
    50/20 = 50 × 7/20 × 7 = 350/140
  3. Likewise, for the 2nd fraction, since 70 × 2 = 140,
    45/70 = 45 × 2/70 × 2 = 90/140
  4. Subtract the two like fractions:
    350/140 - 90/140 = 350 - 90/140 = 260/140
  5. After reducing the fraction, the answer is 13/7
  6. In mixed form: 16/7

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