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Subtract 18/16 from 70/90

1st number: 70/90, 2nd number: 1 2/16

70/90 - 18/16 is -25/72.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 90 and 16 is 720
  2. For the 1st fraction, since 90 × 8 = 720,
    70/90 = 70 × 8/90 × 8 = 560/720
  3. Likewise, for the 2nd fraction, since 16 × 45 = 720,
    18/16 = 18 × 45/16 × 45 = 810/720
  4. Subtract the two fractions:
    560/720 - 810/720 = 560 - 810/720 = -250/720
  5. After reducing the fraction, the answer is -25/72

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