Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 21/70 and 60/42

1st number: 21/70, 2nd number: 1 18/42

21/70 + 60/42 is 121/70.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 70 and 42 is 210

    Next, find the equivalent fraction of both fractional numbers with denominator 210
  2. For the 1st fraction, since 70 × 3 = 210,
    21/70 = 21 × 3/70 × 3 = 63/210
  3. Likewise, for the 2nd fraction, since 42 × 5 = 210,
    60/42 = 60 × 5/42 × 5 = 300/210
  4. Add the two like fractions:
    63/210 + 300/210 = 63 + 300/210 = 363/210
  5. 363/210 simplified gives 121/70
  6. So, 21/70 + 60/42 = 121/70
    In mixed form: 151/70

MathStep (Works offline)

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

Related:

© everydaycalculation.com