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Subtract 70/10 from 42/80

1st number: 42/80, 2nd number: 7 0/10

42/80 - 70/10 is -259/40.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 80 and 10 is 80

    Next, find the equivalent fraction of both fractional numbers with denominator 80
  2. For the 1st fraction, since 80 × 1 = 80,
    42/80 = 42 × 1/80 × 1 = 42/80
  3. Likewise, for the 2nd fraction, since 10 × 8 = 80,
    70/10 = 70 × 8/10 × 8 = 560/80
  4. Subtract the two like fractions:
    42/80 - 560/80 = 42 - 560/80 = -518/80
  5. After reducing the fraction, the answer is -259/40

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