Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 81/10 and 30/40

1st number: 8 1/10, 2nd number: 30/40

81/10 + 30/40 is 177/20.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 10 and 40 is 40

    Next, find the equivalent fraction of both fractional numbers with denominator 40
  2. For the 1st fraction, since 10 × 4 = 40,
    81/10 = 81 × 4/10 × 4 = 324/40
  3. Likewise, for the 2nd fraction, since 40 × 1 = 40,
    30/40 = 30 × 1/40 × 1 = 30/40
  4. Add the two like fractions:
    324/40 + 30/40 = 324 + 30/40 = 354/40
  5. 354/40 simplified gives 177/20
  6. So, 81/10 + 30/40 = 177/20
    In mixed form: 817/20

MathStep (Works offline)

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

Related:

© everydaycalculation.com