Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 63/90 and 1/21

63/90 + 1/21 is 157/210.

Steps for adding fractions

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

    Next, find the equivalent fraction of both fractional numbers with denominator 630
  2. For the 1st fraction, since 90 × 7 = 630,
    63/90 = 63 × 7/90 × 7 = 441/630
  3. Likewise, for the 2nd fraction, since 21 × 30 = 630,
    1/21 = 1 × 30/21 × 30 = 30/630
  4. Add the two like fractions:
    441/630 + 30/630 = 441 + 30/630 = 471/630
  5. 471/630 simplified gives 157/210
  6. So, 63/90 + 1/21 = 157/210

MathStep (Works offline)

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

Related:

© everydaycalculation.com