Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 9/8 and 63/70

1st number: 1 1/8, 2nd number: 63/70

9/8 + 63/70 is 81/40.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 8 and 70 is 280

    Next, find the equivalent fraction of both fractional numbers with denominator 280
  2. For the 1st fraction, since 8 × 35 = 280,
    9/8 = 9 × 35/8 × 35 = 315/280
  3. Likewise, for the 2nd fraction, since 70 × 4 = 280,
    63/70 = 63 × 4/70 × 4 = 252/280
  4. Add the two like fractions:
    315/280 + 252/280 = 315 + 252/280 = 567/280
  5. 567/280 simplified gives 81/40
  6. So, 9/8 + 63/70 = 81/40
    In mixed form: 21/40

MathStep (Works offline)

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

Related:

© everydaycalculation.com