Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 15/80 and 40/70

15/80 + 40/70 is 85/112.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 80 and 70 is 560

    Next, find the equivalent fraction of both fractional numbers with denominator 560
  2. For the 1st fraction, since 80 × 7 = 560,
    15/80 = 15 × 7/80 × 7 = 105/560
  3. Likewise, for the 2nd fraction, since 70 × 8 = 560,
    40/70 = 40 × 8/70 × 8 = 320/560
  4. Add the two like fractions:
    105/560 + 320/560 = 105 + 320/560 = 425/560
  5. 425/560 simplified gives 85/112
  6. So, 15/80 + 40/70 = 85/112

MathStep (Works offline)

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

Related:

© everydaycalculation.com