Answers

Solutions by everydaycalculation.com

Everydaycalculation.com » Answers » Add fractions

Add 21/18 and 30/35

1st number: 1 3/18, 2nd number: 30/35

21/18 + 30/35 is 85/42.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 18 and 35 is 630
  2. For the 1st fraction, since 18 × 35 = 630,
    21/18 = 21 × 35/18 × 35 = 735/630
  3. Likewise, for the 2nd fraction, since 35 × 18 = 630,
    30/35 = 30 × 18/35 × 18 = 540/630
  4. Add the two fractions:
    735/630 + 540/630 = 735 + 540/630 = 1275/630
  5. After reducing the fraction, the answer is 85/42
  6. In mixed form: 21/42

MathStep (Works offline)

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

Related:

© everydaycalculation.com