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Subtract 15/90 from 98/42

1st number: 2 14/42, 2nd number: 15/90

98/42 - 15/90 is 13/6.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 42 and 90 is 630
  2. For the 1st fraction, since 42 × 15 = 630,
    98/42 = 98 × 15/42 × 15 = 1470/630
  3. Likewise, for the 2nd fraction, since 90 × 7 = 630,
    15/90 = 15 × 7/90 × 7 = 105/630
  4. Subtract the two fractions:
    1470/630 - 105/630 = 1470 - 105/630 = 1365/630
  5. After reducing the fraction, the answer is 13/6
  6. In mixed form: 21/6

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