Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 80/20 and 9/70

1st number: 4 0/20, 2nd number: 9/70

80/20 + 9/70 is 289/70.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 20 and 70 is 140

    Next, find the equivalent fraction of both fractional numbers with denominator 140
  2. For the 1st fraction, since 20 × 7 = 140,
    80/20 = 80 × 7/20 × 7 = 560/140
  3. Likewise, for the 2nd fraction, since 70 × 2 = 140,
    9/70 = 9 × 2/70 × 2 = 18/140
  4. Add the two like fractions:
    560/140 + 18/140 = 560 + 18/140 = 578/140
  5. 578/140 simplified gives 289/70
  6. So, 80/20 + 9/70 = 289/70
    In mixed form: 49/70

MathStep (Works offline)

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

Related:

© everydaycalculation.com