Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 90/21 and 8/30

1st number: 4 6/21, 2nd number: 8/30

90/21 + 8/30 is 478/105.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 30 is 210

    Next, find the equivalent fraction of both fractional numbers with denominator 210
  2. For the 1st fraction, since 21 × 10 = 210,
    90/21 = 90 × 10/21 × 10 = 900/210
  3. Likewise, for the 2nd fraction, since 30 × 7 = 210,
    8/30 = 8 × 7/30 × 7 = 56/210
  4. Add the two like fractions:
    900/210 + 56/210 = 900 + 56/210 = 956/210
  5. 956/210 simplified gives 478/105
  6. So, 90/21 + 8/30 = 478/105
    In mixed form: 458/105

MathStep (Works offline)

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

Related:

© everydaycalculation.com