Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 2/21 and 40/70

2/21 + 40/70 is 2/3.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 70 is 210

    Next, find the equivalent fraction of both fractional numbers with denominator 210
  2. For the 1st fraction, since 21 × 10 = 210,
    2/21 = 2 × 10/21 × 10 = 20/210
  3. Likewise, for the 2nd fraction, since 70 × 3 = 210,
    40/70 = 40 × 3/70 × 3 = 120/210
  4. Add the two like fractions:
    20/210 + 120/210 = 20 + 120/210 = 140/210
  5. 140/210 simplified gives 2/3
  6. So, 2/21 + 40/70 = 2/3

MathStep (Works offline)

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

Related:

© everydaycalculation.com