Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 40/16 and 42/40

1st number: 2 8/16, 2nd number: 1 2/40

40/16 + 42/40 is 71/20.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 16 and 40 is 80

    Next, find the equivalent fraction of both fractional numbers with denominator 80
  2. For the 1st fraction, since 16 × 5 = 80,
    40/16 = 40 × 5/16 × 5 = 200/80
  3. Likewise, for the 2nd fraction, since 40 × 2 = 80,
    42/40 = 42 × 2/40 × 2 = 84/80
  4. Add the two like fractions:
    200/80 + 84/80 = 200 + 84/80 = 284/80
  5. 284/80 simplified gives 71/20
  6. So, 40/16 + 42/40 = 71/20
    In mixed form: 311/20

MathStep (Works offline)

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

Related:

© everydaycalculation.com