Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 18/30 and 15/42

18/30 + 15/42 is 67/70.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 30 and 42 is 210

    Next, find the equivalent fraction of both fractional numbers with denominator 210
  2. For the 1st fraction, since 30 × 7 = 210,
    18/30 = 18 × 7/30 × 7 = 126/210
  3. Likewise, for the 2nd fraction, since 42 × 5 = 210,
    15/42 = 15 × 5/42 × 5 = 75/210
  4. Add the two like fractions:
    126/210 + 75/210 = 126 + 75/210 = 201/210
  5. 201/210 simplified gives 67/70
  6. So, 18/30 + 15/42 = 67/70

MathStep (Works offline)

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

Related:

© everydaycalculation.com