Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 30/9 and 21/45

1st number: 3 3/9, 2nd number: 21/45

30/9 + 21/45 is 19/5.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 9 and 45 is 45

    Next, find the equivalent fraction of both fractional numbers with denominator 45
  2. For the 1st fraction, since 9 × 5 = 45,
    30/9 = 30 × 5/9 × 5 = 150/45
  3. Likewise, for the 2nd fraction, since 45 × 1 = 45,
    21/45 = 21 × 1/45 × 1 = 21/45
  4. Add the two like fractions:
    150/45 + 21/45 = 150 + 21/45 = 171/45
  5. 171/45 simplified gives 19/5
  6. So, 30/9 + 21/45 = 19/5
    In mixed form: 34/5

MathStep (Works offline)

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

Related:

© everydaycalculation.com