Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 15/5 and 42/7

1st number: 3 0/5, 2nd number: 6 0/7

15/5 + 42/7 is 9/1.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 5 and 7 is 35

    Next, find the equivalent fraction of both fractional numbers with denominator 35
  2. For the 1st fraction, since 5 × 7 = 35,
    15/5 = 15 × 7/5 × 7 = 105/35
  3. Likewise, for the 2nd fraction, since 7 × 5 = 35,
    42/7 = 42 × 5/7 × 5 = 210/35
  4. Add the two like fractions:
    105/35 + 210/35 = 105 + 210/35 = 315/35
  5. 315/35 simplified gives 9/1
  6. So, 15/5 + 42/7 = 9/1

MathStep (Works offline)

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

Related:

© everydaycalculation.com