Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 21/72 and 35/40

21/72 + 35/40 is 7/6.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 72 and 40 is 360

    Next, find the equivalent fraction of both fractional numbers with denominator 360
  2. For the 1st fraction, since 72 × 5 = 360,
    21/72 = 21 × 5/72 × 5 = 105/360
  3. Likewise, for the 2nd fraction, since 40 × 9 = 360,
    35/40 = 35 × 9/40 × 9 = 315/360
  4. Add the two like fractions:
    105/360 + 315/360 = 105 + 315/360 = 420/360
  5. 420/360 simplified gives 7/6
  6. So, 21/72 + 35/40 = 7/6
    In mixed form: 11/6

MathStep (Works offline)

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

Related:

© everydaycalculation.com