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Subtract 56/90 from 42/25

1st number: 1 17/25, 2nd number: 56/90

42/25 - 56/90 is 238/225.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 25 and 90 is 450
  2. For the 1st fraction, since 25 × 18 = 450,
    42/25 = 42 × 18/25 × 18 = 756/450
  3. Likewise, for the 2nd fraction, since 90 × 5 = 450,
    56/90 = 56 × 5/90 × 5 = 280/450
  4. Subtract the two fractions:
    756/450 - 280/450 = 756 - 280/450 = 476/450
  5. After reducing the fraction, the answer is 238/225
  6. In mixed form: 113/225

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