Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 30/21 and 24/90

1st number: 1 9/21, 2nd number: 24/90

30/21 + 24/90 is 178/105.

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,
    30/21 = 30 × 30/21 × 30 = 900/630
  3. Likewise, for the 2nd fraction, since 90 × 7 = 630,
    24/90 = 24 × 7/90 × 7 = 168/630
  4. Add the two like fractions:
    900/630 + 168/630 = 900 + 168/630 = 1068/630
  5. 1068/630 simplified gives 178/105
  6. So, 30/21 + 24/90 = 178/105
    In mixed form: 173/105

MathStep (Works offline)

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

Related:

© everydaycalculation.com