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Subtract 18/80 from 1/70

1/70 - 18/80 is -59/280.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 70 and 80 is 560

    Next, find the equivalent fraction of both fractional numbers with denominator 560
  2. For the 1st fraction, since 70 × 8 = 560,
    1/70 = 1 × 8/70 × 8 = 8/560
  3. Likewise, for the 2nd fraction, since 80 × 7 = 560,
    18/80 = 18 × 7/80 × 7 = 126/560
  4. Subtract the two like fractions:
    8/560 - 126/560 = 8 - 126/560 = -118/560
  5. After reducing the fraction, the answer is -59/280

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