Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 9/15 and 45/42

1st number: 9/15, 2nd number: 1 3/42

9/15 + 45/42 is 117/70.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 15 and 42 is 210

    Next, find the equivalent fraction of both fractional numbers with denominator 210
  2. For the 1st fraction, since 15 × 14 = 210,
    9/15 = 9 × 14/15 × 14 = 126/210
  3. Likewise, for the 2nd fraction, since 42 × 5 = 210,
    45/42 = 45 × 5/42 × 5 = 225/210
  4. Add the two like fractions:
    126/210 + 225/210 = 126 + 225/210 = 351/210
  5. 351/210 simplified gives 117/70
  6. So, 9/15 + 45/42 = 117/70
    In mixed form: 147/70

MathStep (Works offline)

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

Related:

© everydaycalculation.com