Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 75/80 and 30/84

75/80 + 30/84 is 145/112.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 80 and 84 is 1680

    Next, find the equivalent fraction of both fractional numbers with denominator 1680
  2. For the 1st fraction, since 80 × 21 = 1680,
    75/80 = 75 × 21/80 × 21 = 1575/1680
  3. Likewise, for the 2nd fraction, since 84 × 20 = 1680,
    30/84 = 30 × 20/84 × 20 = 600/1680
  4. Add the two like fractions:
    1575/1680 + 600/1680 = 1575 + 600/1680 = 2175/1680
  5. 2175/1680 simplified gives 145/112
  6. So, 75/80 + 30/84 = 145/112
    In mixed form: 133/112

MathStep (Works offline)

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

Related:

© everydaycalculation.com