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Subtract 15/50 from 7/90

7/90 - 15/50 is -2/9.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 90 and 50 is 450
  2. For the 1st fraction, since 90 × 5 = 450,
    7/90 = 7 × 5/90 × 5 = 35/450
  3. Likewise, for the 2nd fraction, since 50 × 9 = 450,
    15/50 = 15 × 9/50 × 9 = 135/450
  4. Subtract the two fractions:
    35/450 - 135/450 = 35 - 135/450 = -100/450
  5. After reducing the fraction, the answer is -2/9

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