Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 15/40 and 20/84

15/40 + 20/84 is 103/168.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 40 and 84 is 840

    Next, find the equivalent fraction of both fractional numbers with denominator 840
  2. For the 1st fraction, since 40 × 21 = 840,
    15/40 = 15 × 21/40 × 21 = 315/840
  3. Likewise, for the 2nd fraction, since 84 × 10 = 840,
    20/84 = 20 × 10/84 × 10 = 200/840
  4. Add the two like fractions:
    315/840 + 200/840 = 315 + 200/840 = 515/840
  5. 515/840 simplified gives 103/168
  6. So, 15/40 + 20/84 = 103/168

MathStep (Works offline)

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

Related:

© everydaycalculation.com