Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 18/14 and 21/30

1st number: 1 4/14, 2nd number: 21/30

18/14 + 21/30 is 139/70.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 14 and 30 is 210

    Next, find the equivalent fraction of both fractional numbers with denominator 210
  2. For the 1st fraction, since 14 × 15 = 210,
    18/14 = 18 × 15/14 × 15 = 270/210
  3. Likewise, for the 2nd fraction, since 30 × 7 = 210,
    21/30 = 21 × 7/30 × 7 = 147/210
  4. Add the two like fractions:
    270/210 + 147/210 = 270 + 147/210 = 417/210
  5. 417/210 simplified gives 139/70
  6. So, 18/14 + 21/30 = 139/70
    In mixed form: 169/70

MathStep (Works offline)

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

Related:

© everydaycalculation.com