Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 15/90 and 6/42

15/90 + 6/42 is 13/42.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 90 and 42 is 630

    Next, find the equivalent fraction of both fractional numbers with denominator 630
  2. For the 1st fraction, since 90 × 7 = 630,
    15/90 = 15 × 7/90 × 7 = 105/630
  3. Likewise, for the 2nd fraction, since 42 × 15 = 630,
    6/42 = 6 × 15/42 × 15 = 90/630
  4. Add the two like fractions:
    105/630 + 90/630 = 105 + 90/630 = 195/630
  5. 195/630 simplified gives 13/42
  6. So, 15/90 + 6/42 = 13/42

MathStep (Works offline)

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

Related:

© everydaycalculation.com