Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 1/45 and 21/18

1st number: 1/45, 2nd number: 1 3/18

1/45 + 21/18 is 107/90.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 45 and 18 is 90

    Next, find the equivalent fraction of both fractional numbers with denominator 90
  2. For the 1st fraction, since 45 × 2 = 90,
    1/45 = 1 × 2/45 × 2 = 2/90
  3. Likewise, for the 2nd fraction, since 18 × 5 = 90,
    21/18 = 21 × 5/18 × 5 = 105/90
  4. Add the two like fractions:
    2/90 + 105/90 = 2 + 105/90 = 107/90
  5. So, 1/45 + 21/18 = 107/90
    In mixed form: 117/90

MathStep (Works offline)

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

Related:

© everydaycalculation.com