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Subtract 20/90 from 60/70

60/70 - 20/90 is 40/63.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 70 and 90 is 630
  2. For the 1st fraction, since 70 × 9 = 630,
    60/70 = 60 × 9/70 × 9 = 540/630
  3. Likewise, for the 2nd fraction, since 90 × 7 = 630,
    20/90 = 20 × 7/90 × 7 = 140/630
  4. Subtract the two fractions:
    540/630 - 140/630 = 540 - 140/630 = 400/630
  5. After reducing the fraction, the answer is 40/63

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