Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 70/30 and 80/7

1st number: 2 10/30, 2nd number: 11 3/7

70/30 + 80/7 is 289/21.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 30 and 7 is 210

    Next, find the equivalent fraction of both fractional numbers with denominator 210
  2. For the 1st fraction, since 30 × 7 = 210,
    70/30 = 70 × 7/30 × 7 = 490/210
  3. Likewise, for the 2nd fraction, since 7 × 30 = 210,
    80/7 = 80 × 30/7 × 30 = 2400/210
  4. Add the two like fractions:
    490/210 + 2400/210 = 490 + 2400/210 = 2890/210
  5. 2890/210 simplified gives 289/21
  6. So, 70/30 + 80/7 = 289/21
    In mixed form: 1316/21

MathStep (Works offline)

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

Related:

© everydaycalculation.com