Answers

Solutions by everydaycalculation.com

Everydaycalculation.com » Answers » Subtract fractions

Subtract 1/12 from 42/40

1st number: 1 2/40, 2nd number: 1/12

42/40 - 1/12 is 29/30.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 40 and 12 is 120
  2. For the 1st fraction, since 40 × 3 = 120,
    42/40 = 42 × 3/40 × 3 = 126/120
  3. Likewise, for the 2nd fraction, since 12 × 10 = 120,
    1/12 = 1 × 10/12 × 10 = 10/120
  4. Subtract the two fractions:
    126/120 - 10/120 = 126 - 10/120 = 116/120
  5. After reducing the fraction, the answer is 29/30

MathStep (Works offline)

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

Related:

© everydaycalculation.com