Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 90/7 and 20/40

1st number: 12 6/7, 2nd number: 20/40

90/7 + 20/40 is 187/14.

Steps for adding fractions

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

    Next, find the equivalent fraction of both fractional numbers with denominator 280
  2. For the 1st fraction, since 7 × 40 = 280,
    90/7 = 90 × 40/7 × 40 = 3600/280
  3. Likewise, for the 2nd fraction, since 40 × 7 = 280,
    20/40 = 20 × 7/40 × 7 = 140/280
  4. Add the two like fractions:
    3600/280 + 140/280 = 3600 + 140/280 = 3740/280
  5. 3740/280 simplified gives 187/14
  6. So, 90/7 + 20/40 = 187/14
    In mixed form: 135/14

MathStep (Works offline)

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

Related:

© everydaycalculation.com