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Subtract 21/24 from 90/18

1st number: 5 0/18, 2nd number: 21/24

90/18 - 21/24 is 33/8.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 18 and 24 is 72

    Next, find the equivalent fraction of both fractional numbers with denominator 72
  2. For the 1st fraction, since 18 × 4 = 72,
    90/18 = 90 × 4/18 × 4 = 360/72
  3. Likewise, for the 2nd fraction, since 24 × 3 = 72,
    21/24 = 21 × 3/24 × 3 = 63/72
  4. Subtract the two like fractions:
    360/72 - 63/72 = 360 - 63/72 = 297/72
  5. After reducing the fraction, the answer is 33/8
  6. In mixed form: 41/8

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