Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 90/70 and 9/90

1st number: 1 20/70, 2nd number: 9/90

90/70 + 9/90 is 97/70.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 70 and 90 is 630

    Next, find the equivalent fraction of both fractional numbers with denominator 630
  2. For the 1st fraction, since 70 × 9 = 630,
    90/70 = 90 × 9/70 × 9 = 810/630
  3. Likewise, for the 2nd fraction, since 90 × 7 = 630,
    9/90 = 9 × 7/90 × 7 = 63/630
  4. Add the two like fractions:
    810/630 + 63/630 = 810 + 63/630 = 873/630
  5. 873/630 simplified gives 97/70
  6. So, 90/70 + 9/90 = 97/70
    In mixed form: 127/70

MathStep (Works offline)

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

Related:

© everydaycalculation.com