Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 90/35 and 21/18

1st number: 2 20/35, 2nd number: 1 3/18

90/35 + 21/18 is 157/42.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 35 and 18 is 630
  2. For the 1st fraction, since 35 × 18 = 630,
    90/35 = 90 × 18/35 × 18 = 1620/630
  3. Likewise, for the 2nd fraction, since 18 × 35 = 630,
    21/18 = 21 × 35/18 × 35 = 735/630
  4. Add the two fractions:
    1620/630 + 735/630 = 1620 + 735/630 = 2355/630
  5. 2355/630 simplified gives 157/42
  6. So, 90/35 + 21/18 = 157/42
    In mixed form: 331/42

MathStep (Works offline)

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

Related:

© everydaycalculation.com