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Subtract 1/72 from 30/28

1st number: 1 2/28, 2nd number: 1/72

30/28 - 1/72 is 533/504.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 28 and 72 is 504
  2. For the 1st fraction, since 28 × 18 = 504,
    30/28 = 30 × 18/28 × 18 = 540/504
  3. Likewise, for the 2nd fraction, since 72 × 7 = 504,
    1/72 = 1 × 7/72 × 7 = 7/504
  4. Subtract the two fractions:
    540/504 - 7/504 = 540 - 7/504 = 533/504
  5. In mixed form: 129/504

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