Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 7/42 and 8/45

7/42 + 8/45 is 31/90.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 42 and 45 is 630

    Next, find the equivalent fraction of both fractional numbers with denominator 630
  2. For the 1st fraction, since 42 × 15 = 630,
    7/42 = 7 × 15/42 × 15 = 105/630
  3. Likewise, for the 2nd fraction, since 45 × 14 = 630,
    8/45 = 8 × 14/45 × 14 = 112/630
  4. Add the two like fractions:
    105/630 + 112/630 = 105 + 112/630 = 217/630
  5. 217/630 simplified gives 31/90
  6. So, 7/42 + 8/45 = 31/90

MathStep (Works offline)

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

Related:

© everydaycalculation.com