Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 42/84 and 54/70

42/84 + 54/70 is 89/70.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 84 and 70 is 420
  2. For the 1st fraction, since 84 × 5 = 420,
    42/84 = 42 × 5/84 × 5 = 210/420
  3. Likewise, for the 2nd fraction, since 70 × 6 = 420,
    54/70 = 54 × 6/70 × 6 = 324/420
  4. Add the two fractions:
    210/420 + 324/420 = 210 + 324/420 = 534/420
  5. 534/420 simplified gives 89/70
  6. So, 42/84 + 54/70 = 89/70
    In mixed form: 119/70

MathStep (Works offline)

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

Related:

© everydaycalculation.com