Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 20/64 and 42/90

20/64 + 42/90 is 187/240.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 64 and 90 is 2880

    Next, find the equivalent fraction of both fractional numbers with denominator 2880
  2. For the 1st fraction, since 64 × 45 = 2880,
    20/64 = 20 × 45/64 × 45 = 900/2880
  3. Likewise, for the 2nd fraction, since 90 × 32 = 2880,
    42/90 = 42 × 32/90 × 32 = 1344/2880
  4. Add the two like fractions:
    900/2880 + 1344/2880 = 900 + 1344/2880 = 2244/2880
  5. 2244/2880 simplified gives 187/240
  6. So, 20/64 + 42/90 = 187/240

MathStep (Works offline)

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

Related:

© everydaycalculation.com