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Subtract 21/45 from 1/35

1/35 - 21/45 is -46/105.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 35 and 45 is 315
  2. For the 1st fraction, since 35 × 9 = 315,
    1/35 = 1 × 9/35 × 9 = 9/315
  3. Likewise, for the 2nd fraction, since 45 × 7 = 315,
    21/45 = 21 × 7/45 × 7 = 147/315
  4. Subtract the two fractions:
    9/315 - 147/315 = 9 - 147/315 = -138/315
  5. After reducing the fraction, the answer is -46/105

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