Answers

Solutions by everydaycalculation.com

Everydaycalculation.com » Answers » Add fractions

Add 21/90 and 90/27

1st number: 21/90, 2nd number: 3 9/27

21/90 + 90/27 is 107/30.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 90 and 27 is 270
  2. For the 1st fraction, since 90 × 3 = 270,
    21/90 = 21 × 3/90 × 3 = 63/270
  3. Likewise, for the 2nd fraction, since 27 × 10 = 270,
    90/27 = 90 × 10/27 × 10 = 900/270
  4. Add the two fractions:
    63/270 + 900/270 = 63 + 900/270 = 963/270
  5. After reducing the fraction, the answer is 107/30
  6. In mixed form: 317/30

MathStep (Works offline)

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

Related:

© everydaycalculation.com