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Subtract 30/18 from 60/70

1st number: 60/70, 2nd number: 1 12/18

60/70 - 30/18 is -17/21.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 70 and 18 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 18 × 35 = 630,
    30/18 = 30 × 35/18 × 35 = 1050/630
  4. Subtract the two fractions:
    540/630 - 1050/630 = 540 - 1050/630 = -510/630
  5. After reducing the fraction, the answer is -17/21

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