Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 20/8 and 42/70

1st number: 2 4/8, 2nd number: 42/70

20/8 + 42/70 is 31/10.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 8 and 70 is 280

    Next, find the equivalent fraction of both fractional numbers with denominator 280
  2. For the 1st fraction, since 8 × 35 = 280,
    20/8 = 20 × 35/8 × 35 = 700/280
  3. Likewise, for the 2nd fraction, since 70 × 4 = 280,
    42/70 = 42 × 4/70 × 4 = 168/280
  4. Add the two like fractions:
    700/280 + 168/280 = 700 + 168/280 = 868/280
  5. 868/280 simplified gives 31/10
  6. So, 20/8 + 42/70 = 31/10
    In mixed form: 31/10

MathStep (Works offline)

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

Related:

© everydaycalculation.com