Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 30/40 and 25/42

30/40 + 25/42 is 113/84.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 40 and 42 is 840

    Next, find the equivalent fraction of both fractional numbers with denominator 840
  2. For the 1st fraction, since 40 × 21 = 840,
    30/40 = 30 × 21/40 × 21 = 630/840
  3. Likewise, for the 2nd fraction, since 42 × 20 = 840,
    25/42 = 25 × 20/42 × 20 = 500/840
  4. Add the two like fractions:
    630/840 + 500/840 = 630 + 500/840 = 1130/840
  5. 1130/840 simplified gives 113/84
  6. So, 30/40 + 25/42 = 113/84
    In mixed form: 129/84

MathStep (Works offline)

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

Related:

© everydaycalculation.com