Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Subtract fractions

Subtract 7/12 from 42/80

42/80 - 7/12 is -7/120.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 80 and 12 is 240
  2. For the 1st fraction, since 80 × 3 = 240,
    42/80 = 42 × 3/80 × 3 = 126/240
  3. Likewise, for the 2nd fraction, since 12 × 20 = 240,
    7/12 = 7 × 20/12 × 20 = 140/240
  4. Subtract the two fractions:
    126/240 - 140/240 = 126 - 140/240 = -14/240
  5. After reducing the fraction, the answer is -7/120

MathStep (Works offline)

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

Related:

© everydaycalculation.com