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Subtract 21/63 from 10/5

1st number: 2 0/5, 2nd number: 21/63

10/5 - 21/63 is 5/3.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 5 and 63 is 315
  2. For the 1st fraction, since 5 × 63 = 315,
    10/5 = 10 × 63/5 × 63 = 630/315
  3. Likewise, for the 2nd fraction, since 63 × 5 = 315,
    21/63 = 21 × 5/63 × 5 = 105/315
  4. Subtract the two fractions:
    630/315 - 105/315 = 630 - 105/315 = 525/315
  5. After reducing the fraction, the answer is 5/3
  6. In mixed form: 12/3

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