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Subtract 28/16 from 20/70

1st number: 20/70, 2nd number: 1 12/16

20/70 - 28/16 is -41/28.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 70 and 16 is 560
  2. For the 1st fraction, since 70 × 8 = 560,
    20/70 = 20 × 8/70 × 8 = 160/560
  3. Likewise, for the 2nd fraction, since 16 × 35 = 560,
    28/16 = 28 × 35/16 × 35 = 980/560
  4. Subtract the two fractions:
    160/560 - 980/560 = 160 - 980/560 = -820/560
  5. After reducing the fraction, the answer is -41/28

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