Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Subtract fractions

Subtract 90/24 from 42/70

1st number: 42/70, 2nd number: 3 18/24

42/70 - 90/24 is -63/20.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 70 and 24 is 840

    Next, find the equivalent fraction of both fractional numbers with denominator 840
  2. For the 1st fraction, since 70 × 12 = 840,
    42/70 = 42 × 12/70 × 12 = 504/840
  3. Likewise, for the 2nd fraction, since 24 × 35 = 840,
    90/24 = 90 × 35/24 × 35 = 3150/840
  4. Subtract the two like fractions:
    504/840 - 3150/840 = 504 - 3150/840 = -2646/840
  5. After reducing the fraction, the answer is -63/20

MathStep (Works offline)

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

Related:

© everydaycalculation.com