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Subtract 7/9 from 16/70

16/70 - 7/9 is -173/315.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 70 and 9 is 630

    Next, find the equivalent fraction of both fractional numbers with denominator 630
  2. For the 1st fraction, since 70 × 9 = 630,
    16/70 = 16 × 9/70 × 9 = 144/630
  3. Likewise, for the 2nd fraction, since 9 × 70 = 630,
    7/9 = 7 × 70/9 × 70 = 490/630
  4. Subtract the two like fractions:
    144/630 - 490/630 = 144 - 490/630 = -346/630
  5. After reducing the fraction, the answer is -173/315

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