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Subtract 21/40 from 50/45

1st number: 1 5/45, 2nd number: 21/40

50/45 - 21/40 is 211/360.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 45 and 40 is 360

    Next, find the equivalent fraction of both fractional numbers with denominator 360
  2. For the 1st fraction, since 45 × 8 = 360,
    50/45 = 50 × 8/45 × 8 = 400/360
  3. Likewise, for the 2nd fraction, since 40 × 9 = 360,
    21/40 = 21 × 9/40 × 9 = 189/360
  4. Subtract the two like fractions:
    400/360 - 189/360 = 400 - 189/360 = 211/360

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