Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 30/50 and 21/40

30/50 + 21/40 is 9/8.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 50 and 40 is 200

    Next, find the equivalent fraction of both fractional numbers with denominator 200
  2. For the 1st fraction, since 50 × 4 = 200,
    30/50 = 30 × 4/50 × 4 = 120/200
  3. Likewise, for the 2nd fraction, since 40 × 5 = 200,
    21/40 = 21 × 5/40 × 5 = 105/200
  4. Add the two like fractions:
    120/200 + 105/200 = 120 + 105/200 = 225/200
  5. 225/200 simplified gives 9/8
  6. So, 30/50 + 21/40 = 9/8
    In mixed form: 11/8

MathStep (Works offline)

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

Related:

© everydaycalculation.com