Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 72/20 and 90/5

1st number: 3 12/20, 2nd number: 18 0/5

72/20 + 90/5 is 108/5.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 20 and 5 is 20

    Next, find the equivalent fraction of both fractional numbers with denominator 20
  2. For the 1st fraction, since 20 × 1 = 20,
    72/20 = 72 × 1/20 × 1 = 72/20
  3. Likewise, for the 2nd fraction, since 5 × 4 = 20,
    90/5 = 90 × 4/5 × 4 = 360/20
  4. Add the two like fractions:
    72/20 + 360/20 = 72 + 360/20 = 432/20
  5. 432/20 simplified gives 108/5
  6. So, 72/20 + 90/5 = 108/5
    In mixed form: 213/5

MathStep (Works offline)

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

Related:

© everydaycalculation.com