Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 9/80 and 7/42

9/80 + 7/42 is 67/240.

Steps for adding fractions

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

    Next, find the equivalent fraction of both fractional numbers with denominator 1680
  2. For the 1st fraction, since 80 × 21 = 1680,
    9/80 = 9 × 21/80 × 21 = 189/1680
  3. Likewise, for the 2nd fraction, since 42 × 40 = 1680,
    7/42 = 7 × 40/42 × 40 = 280/1680
  4. Add the two like fractions:
    189/1680 + 280/1680 = 189 + 280/1680 = 469/1680
  5. 469/1680 simplified gives 67/240
  6. So, 9/80 + 7/42 = 67/240

MathStep (Works offline)

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

Related:

© everydaycalculation.com