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Subtract 42/10 from 50/45

1st number: 1 5/45, 2nd number: 4 2/10

50/45 - 42/10 is -139/45.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 45 and 10 is 90

    Next, find the equivalent fraction of both fractional numbers with denominator 90
  2. For the 1st fraction, since 45 × 2 = 90,
    50/45 = 50 × 2/45 × 2 = 100/90
  3. Likewise, for the 2nd fraction, since 10 × 9 = 90,
    42/10 = 42 × 9/10 × 9 = 378/90
  4. Subtract the two like fractions:
    100/90 - 378/90 = 100 - 378/90 = -278/90
  5. After reducing the fraction, the answer is -139/45

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