Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 21/70 and 45/8

1st number: 21/70, 2nd number: 5 5/8

21/70 + 45/8 is 237/40.

Steps for adding fractions

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

    Next, find the equivalent fraction of both fractional numbers with denominator 280
  2. For the 1st fraction, since 70 × 4 = 280,
    21/70 = 21 × 4/70 × 4 = 84/280
  3. Likewise, for the 2nd fraction, since 8 × 35 = 280,
    45/8 = 45 × 35/8 × 35 = 1575/280
  4. Add the two like fractions:
    84/280 + 1575/280 = 84 + 1575/280 = 1659/280
  5. 1659/280 simplified gives 237/40
  6. So, 21/70 + 45/8 = 237/40
    In mixed form: 537/40

MathStep (Works offline)

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

Related:

© everydaycalculation.com