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Subtract 49/10 from 15/21

1st number: 15/21, 2nd number: 4 9/10

15/21 - 49/10 is -293/70.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 10 is 210

    Next, find the equivalent fraction of both fractional numbers with denominator 210
  2. For the 1st fraction, since 21 × 10 = 210,
    15/21 = 15 × 10/21 × 10 = 150/210
  3. Likewise, for the 2nd fraction, since 10 × 21 = 210,
    49/10 = 49 × 21/10 × 21 = 1029/210
  4. Subtract the two like fractions:
    150/210 - 1029/210 = 150 - 1029/210 = -879/210
  5. After reducing the fraction, the answer is -293/70

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