Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Subtract fractions

Subtract 60/21 from 42/45

1st number: 42/45, 2nd number: 2 18/21

42/45 - 60/21 is -202/105.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 45 and 21 is 315

    Next, find the equivalent fraction of both fractional numbers with denominator 315
  2. For the 1st fraction, since 45 × 7 = 315,
    42/45 = 42 × 7/45 × 7 = 294/315
  3. Likewise, for the 2nd fraction, since 21 × 15 = 315,
    60/21 = 60 × 15/21 × 15 = 900/315
  4. Subtract the two like fractions:
    294/315 - 900/315 = 294 - 900/315 = -606/315
  5. After reducing the fraction, the answer is -202/105

MathStep (Works offline)

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

Related:

© everydaycalculation.com