Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 3/42 and 45/70

3/42 + 45/70 is 5/7.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 42 and 70 is 210
  2. For the 1st fraction, since 42 × 5 = 210,
    3/42 = 3 × 5/42 × 5 = 15/210
  3. Likewise, for the 2nd fraction, since 70 × 3 = 210,
    45/70 = 45 × 3/70 × 3 = 135/210
  4. Add the two fractions:
    15/210 + 135/210 = 15 + 135/210 = 150/210
  5. 150/210 simplified gives 5/7
  6. So, 3/42 + 45/70 = 5/7

MathStep (Works offline)

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

Related:

© everydaycalculation.com