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Subtract 7/63 from 9/30

9/30 - 7/63 is 17/90.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 30 and 63 is 630
  2. For the 1st fraction, since 30 × 21 = 630,
    9/30 = 9 × 21/30 × 21 = 189/630
  3. Likewise, for the 2nd fraction, since 63 × 10 = 630,
    7/63 = 7 × 10/63 × 10 = 70/630
  4. Subtract the two fractions:
    189/630 - 70/630 = 189 - 70/630 = 119/630
  5. After reducing the fraction, the answer is 17/90

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