Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 30/4 and 9/42

1st number: 7 2/4, 2nd number: 9/42

30/4 + 9/42 is 54/7.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 4 and 42 is 84

    Next, find the equivalent fraction of both fractional numbers with denominator 84
  2. For the 1st fraction, since 4 × 21 = 84,
    30/4 = 30 × 21/4 × 21 = 630/84
  3. Likewise, for the 2nd fraction, since 42 × 2 = 84,
    9/42 = 9 × 2/42 × 2 = 18/84
  4. Add the two like fractions:
    630/84 + 18/84 = 630 + 18/84 = 648/84
  5. 648/84 simplified gives 54/7
  6. So, 30/4 + 9/42 = 54/7
    In mixed form: 75/7

MathStep (Works offline)

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

Related:

© everydaycalculation.com