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Subtract 4/90 from 35/21

1st number: 1 14/21, 2nd number: 4/90

35/21 - 4/90 is 73/45.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 90 is 630

    Next, find the equivalent fraction of both fractional numbers with denominator 630
  2. For the 1st fraction, since 21 × 30 = 630,
    35/21 = 35 × 30/21 × 30 = 1050/630
  3. Likewise, for the 2nd fraction, since 90 × 7 = 630,
    4/90 = 4 × 7/90 × 7 = 28/630
  4. Subtract the two like fractions:
    1050/630 - 28/630 = 1050 - 28/630 = 1022/630
  5. After reducing the fraction, the answer is 73/45
  6. In mixed form: 128/45

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