Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Subtract fractions

Subtract 70/54 from 30/63

1st number: 30/63, 2nd number: 1 16/54

30/63 - 70/54 is -155/189.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 63 and 54 is 378

    Next, find the equivalent fraction of both fractional numbers with denominator 378
  2. For the 1st fraction, since 63 × 6 = 378,
    30/63 = 30 × 6/63 × 6 = 180/378
  3. Likewise, for the 2nd fraction, since 54 × 7 = 378,
    70/54 = 70 × 7/54 × 7 = 490/378
  4. Subtract the two like fractions:
    180/378 - 490/378 = 180 - 490/378 = -310/378
  5. After reducing the fraction, the answer is -155/189

MathStep (Works offline)

Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad

Related:

© everydaycalculation.com