Answers

Solutions by everydaycalculation.com

Everydaycalculation.com » Answers » Add fractions

Add 6/21 and 40/90

6/21 + 40/90 is 46/63.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 90 is 630
  2. For the 1st fraction, since 21 × 30 = 630,
    6/21 = 6 × 30/21 × 30 = 180/630
  3. Likewise, for the 2nd fraction, since 90 × 7 = 630,
    40/90 = 40 × 7/90 × 7 = 280/630
  4. Add the two fractions:
    180/630 + 280/630 = 180 + 280/630 = 460/630
  5. After reducing the fraction, the answer is 46/63

MathStep (Works offline)

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

Related:

© everydaycalculation.com