Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 21/90 and 30/49

21/90 + 30/49 is 1243/1470.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 90 and 49 is 4410

    Next, find the equivalent fraction of both fractional numbers with denominator 4410
  2. For the 1st fraction, since 90 × 49 = 4410,
    21/90 = 21 × 49/90 × 49 = 1029/4410
  3. Likewise, for the 2nd fraction, since 49 × 90 = 4410,
    30/49 = 30 × 90/49 × 90 = 2700/4410
  4. Add the two like fractions:
    1029/4410 + 2700/4410 = 1029 + 2700/4410 = 3729/4410
  5. 3729/4410 simplified gives 1243/1470
  6. So, 21/90 + 30/49 = 1243/1470

MathStep (Works offline)

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

Related:

© everydaycalculation.com