Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 72/10 and 40/4

1st number: 7 2/10, 2nd number: 10 0/4

72/10 + 40/4 is 86/5.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 10 and 4 is 20

    Next, find the equivalent fraction of both fractional numbers with denominator 20
  2. For the 1st fraction, since 10 × 2 = 20,
    72/10 = 72 × 2/10 × 2 = 144/20
  3. Likewise, for the 2nd fraction, since 4 × 5 = 20,
    40/4 = 40 × 5/4 × 5 = 200/20
  4. Add the two like fractions:
    144/20 + 200/20 = 144 + 200/20 = 344/20
  5. 344/20 simplified gives 86/5
  6. So, 72/10 + 40/4 = 86/5
    In mixed form: 171/5

MathStep (Works offline)

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

Related:

© everydaycalculation.com