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Subtract 42/30 from 25/42

1st number: 25/42, 2nd number: 1 12/30

25/42 - 42/30 is -169/210.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 42 and 30 is 210
  2. For the 1st fraction, since 42 × 5 = 210,
    25/42 = 25 × 5/42 × 5 = 125/210
  3. Likewise, for the 2nd fraction, since 30 × 7 = 210,
    42/30 = 42 × 7/30 × 7 = 294/210
  4. Subtract the two fractions:
    125/210 - 294/210 = 125 - 294/210 = -169/210

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