Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 45/42 and 80/7

1st number: 1 3/42, 2nd number: 11 3/7

45/42 + 80/7 is 25/2.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 42 and 7 is 42
  2. For the 1st fraction, since 42 × 1 = 42,
    45/42 = 45 × 1/42 × 1 = 45/42
  3. Likewise, for the 2nd fraction, since 7 × 6 = 42,
    80/7 = 80 × 6/7 × 6 = 480/42
  4. Add the two fractions:
    45/42 + 480/42 = 45 + 480/42 = 525/42
  5. 525/42 simplified gives 25/2
  6. So, 45/42 + 80/7 = 25/2
    In mixed form: 121/2

MathStep (Works offline)

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

Related:

© everydaycalculation.com