Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 40/7 and 30/72

1st number: 5 5/7, 2nd number: 30/72

40/7 + 30/72 is 515/84.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 7 and 72 is 504

    Next, find the equivalent fraction of both fractional numbers with denominator 504
  2. For the 1st fraction, since 7 × 72 = 504,
    40/7 = 40 × 72/7 × 72 = 2880/504
  3. Likewise, for the 2nd fraction, since 72 × 7 = 504,
    30/72 = 30 × 7/72 × 7 = 210/504
  4. Add the two like fractions:
    2880/504 + 210/504 = 2880 + 210/504 = 3090/504
  5. 3090/504 simplified gives 515/84
  6. So, 40/7 + 30/72 = 515/84
    In mixed form: 611/84

MathStep (Works offline)

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

Related:

© everydaycalculation.com