Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 7/21 and 8/90

7/21 + 8/90 is 19/45.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 90 is 630

    Next, find the equivalent fraction of both fractional numbers with denominator 630
  2. For the 1st fraction, since 21 × 30 = 630,
    7/21 = 7 × 30/21 × 30 = 210/630
  3. Likewise, for the 2nd fraction, since 90 × 7 = 630,
    8/90 = 8 × 7/90 × 7 = 56/630
  4. Add the two like fractions:
    210/630 + 56/630 = 210 + 56/630 = 266/630
  5. 266/630 simplified gives 19/45
  6. So, 7/21 + 8/90 = 19/45

MathStep (Works offline)

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

Related:

© everydaycalculation.com