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Subtract 9/84 from 72/10

1st number: 7 2/10, 2nd number: 9/84

72/10 - 9/84 is 993/140.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 10 and 84 is 420
  2. For the 1st fraction, since 10 × 42 = 420,
    72/10 = 72 × 42/10 × 42 = 3024/420
  3. Likewise, for the 2nd fraction, since 84 × 5 = 420,
    9/84 = 9 × 5/84 × 5 = 45/420
  4. Subtract the two fractions:
    3024/420 - 45/420 = 3024 - 45/420 = 2979/420
  5. After reducing the fraction, the answer is 993/140
  6. In mixed form: 713/140

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