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Subtract 7/10 from 2/9

2/9 - 7/10 is -43/90.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 9 and 10 is 90
  2. For the 1st fraction, since 9 × 10 = 90,
    2/9 = 2 × 10/9 × 10 = 20/90
  3. Likewise, for the 2nd fraction, since 10 × 9 = 90,
    7/10 = 7 × 9/10 × 9 = 63/90
  4. Subtract the two fractions:
    20/90 - 63/90 = 20 - 63/90 = -43/90

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