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Subtract 70/50 from 7/84

1st number: 7/84, 2nd number: 1 20/50

7/84 - 70/50 is -79/60.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 84 and 50 is 2100

    Next, find the equivalent fraction of both fractional numbers with denominator 2100
  2. For the 1st fraction, since 84 × 25 = 2100,
    7/84 = 7 × 25/84 × 25 = 175/2100
  3. Likewise, for the 2nd fraction, since 50 × 42 = 2100,
    70/50 = 70 × 42/50 × 42 = 2940/2100
  4. Subtract the two like fractions:
    175/2100 - 2940/2100 = 175 - 2940/2100 = -2765/2100
  5. After reducing the fraction, the answer is -79/60

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