Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 5/42 and 15/80

5/42 + 15/80 is 103/336.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 42 and 80 is 1680

    Next, find the equivalent fraction of both fractional numbers with denominator 1680
  2. For the 1st fraction, since 42 × 40 = 1680,
    5/42 = 5 × 40/42 × 40 = 200/1680
  3. Likewise, for the 2nd fraction, since 80 × 21 = 1680,
    15/80 = 15 × 21/80 × 21 = 315/1680
  4. Add the two like fractions:
    200/1680 + 315/1680 = 200 + 315/1680 = 515/1680
  5. 515/1680 simplified gives 103/336
  6. So, 5/42 + 15/80 = 103/336

MathStep (Works offline)

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

Related:

© everydaycalculation.com