Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 2/20 and 21/72

2/20 + 21/72 is 47/120.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 20 and 72 is 360

    Next, find the equivalent fraction of both fractional numbers with denominator 360
  2. For the 1st fraction, since 20 × 18 = 360,
    2/20 = 2 × 18/20 × 18 = 36/360
  3. Likewise, for the 2nd fraction, since 72 × 5 = 360,
    21/72 = 21 × 5/72 × 5 = 105/360
  4. Add the two like fractions:
    36/360 + 105/360 = 36 + 105/360 = 141/360
  5. 141/360 simplified gives 47/120
  6. So, 2/20 + 21/72 = 47/120

MathStep (Works offline)

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

Related:

© everydaycalculation.com