Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 21/20 and 25/35

1st number: 1 1/20, 2nd number: 25/35

21/20 + 25/35 is 247/140.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 20 and 35 is 140

    Next, find the equivalent fraction of both fractional numbers with denominator 140
  2. For the 1st fraction, since 20 × 7 = 140,
    21/20 = 21 × 7/20 × 7 = 147/140
  3. Likewise, for the 2nd fraction, since 35 × 4 = 140,
    25/35 = 25 × 4/35 × 4 = 100/140
  4. Add the two like fractions:
    147/140 + 100/140 = 147 + 100/140 = 247/140
  5. So, 21/20 + 25/35 = 247/140
    In mixed form: 1107/140

MathStep (Works offline)

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

Related:

© everydaycalculation.com