Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 21/15 and 45/64

1st number: 1 6/15, 2nd number: 45/64

21/15 + 45/64 is 673/320.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 15 and 64 is 960

    Next, find the equivalent fraction of both fractional numbers with denominator 960
  2. For the 1st fraction, since 15 × 64 = 960,
    21/15 = 21 × 64/15 × 64 = 1344/960
  3. Likewise, for the 2nd fraction, since 64 × 15 = 960,
    45/64 = 45 × 15/64 × 15 = 675/960
  4. Add the two like fractions:
    1344/960 + 675/960 = 1344 + 675/960 = 2019/960
  5. 2019/960 simplified gives 673/320
  6. So, 21/15 + 45/64 = 673/320
    In mixed form: 233/320

MathStep (Works offline)

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

Related:

© everydaycalculation.com