Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 18/40 and 9/7

1st number: 18/40, 2nd number: 1 2/7

18/40 + 9/7 is 243/140.

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,
    18/40 = 18 × 7/40 × 7 = 126/280
  3. Likewise, for the 2nd fraction, since 7 × 40 = 280,
    9/7 = 9 × 40/7 × 40 = 360/280
  4. Add the two like fractions:
    126/280 + 360/280 = 126 + 360/280 = 486/280
  5. 486/280 simplified gives 243/140
  6. So, 18/40 + 9/7 = 243/140
    In mixed form: 1103/140

MathStep (Works offline)

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

Related:

© everydaycalculation.com