Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 15/10 and 18/42

1st number: 1 5/10, 2nd number: 18/42

15/10 + 18/42 is 27/14.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 10 and 42 is 210

    Next, find the equivalent fraction of both fractional numbers with denominator 210
  2. For the 1st fraction, since 10 × 21 = 210,
    15/10 = 15 × 21/10 × 21 = 315/210
  3. Likewise, for the 2nd fraction, since 42 × 5 = 210,
    18/42 = 18 × 5/42 × 5 = 90/210
  4. Add the two like fractions:
    315/210 + 90/210 = 315 + 90/210 = 405/210
  5. 405/210 simplified gives 27/14
  6. So, 15/10 + 18/42 = 27/14
    In mixed form: 113/14

MathStep (Works offline)

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

Related:

© everydaycalculation.com