Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 5/40 and 21/7

1st number: 5/40, 2nd number: 3 0/7

5/40 + 21/7 is 25/8.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 40 and 7 is 280

    Next, find the equivalent fraction of both fractional numbers with denominator 280
  2. For the 1st fraction, since 40 × 7 = 280,
    5/40 = 5 × 7/40 × 7 = 35/280
  3. Likewise, for the 2nd fraction, since 7 × 40 = 280,
    21/7 = 21 × 40/7 × 40 = 840/280
  4. Add the two like fractions:
    35/280 + 840/280 = 35 + 840/280 = 875/280
  5. 875/280 simplified gives 25/8
  6. So, 5/40 + 21/7 = 25/8
    In mixed form: 31/8

MathStep (Works offline)

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

Related:

© everydaycalculation.com