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Subtract 21/80 from 2/70

2/70 - 21/80 is -131/560.

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,
    2/70 = 2 × 8/70 × 8 = 16/560
  3. Likewise, for the 2nd fraction, since 80 × 7 = 560,
    21/80 = 21 × 7/80 × 7 = 147/560
  4. Subtract the two like fractions:
    16/560 - 147/560 = 16 - 147/560 = -131/560

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