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Subtract 80/49 from 20/70

1st number: 20/70, 2nd number: 1 31/49

20/70 - 80/49 is -66/49.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 70 and 49 is 490

    Next, find the equivalent fraction of both fractional numbers with denominator 490
  2. For the 1st fraction, since 70 × 7 = 490,
    20/70 = 20 × 7/70 × 7 = 140/490
  3. Likewise, for the 2nd fraction, since 49 × 10 = 490,
    80/49 = 80 × 10/49 × 10 = 800/490
  4. Subtract the two like fractions:
    140/490 - 800/490 = 140 - 800/490 = -660/490
  5. After reducing the fraction, the answer is -66/49

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