Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 45/21 and 90/10

1st number: 2 3/21, 2nd number: 9 0/10

45/21 + 90/10 is 78/7.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 10 is 210

    Next, find the equivalent fraction of both fractional numbers with denominator 210
  2. For the 1st fraction, since 21 × 10 = 210,
    45/21 = 45 × 10/21 × 10 = 450/210
  3. Likewise, for the 2nd fraction, since 10 × 21 = 210,
    90/10 = 90 × 21/10 × 21 = 1890/210
  4. Add the two like fractions:
    450/210 + 1890/210 = 450 + 1890/210 = 2340/210
  5. 2340/210 simplified gives 78/7
  6. So, 45/21 + 90/10 = 78/7
    In mixed form: 111/7

MathStep (Works offline)

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

Related:

© everydaycalculation.com