Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 21/90 and 12/14

21/90 + 12/14 is 229/210.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 90 and 14 is 630

    Next, find the equivalent fraction of both fractional numbers with denominator 630
  2. For the 1st fraction, since 90 × 7 = 630,
    21/90 = 21 × 7/90 × 7 = 147/630
  3. Likewise, for the 2nd fraction, since 14 × 45 = 630,
    12/14 = 12 × 45/14 × 45 = 540/630
  4. Add the two like fractions:
    147/630 + 540/630 = 147 + 540/630 = 687/630
  5. 687/630 simplified gives 229/210
  6. So, 21/90 + 12/14 = 229/210
    In mixed form: 119/210

MathStep (Works offline)

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

Related:

© everydaycalculation.com