Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 15/8 and 21/45

1st number: 1 7/8, 2nd number: 21/45

15/8 + 21/45 is 281/120.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 8 and 45 is 360

    Next, find the equivalent fraction of both fractional numbers with denominator 360
  2. For the 1st fraction, since 8 × 45 = 360,
    15/8 = 15 × 45/8 × 45 = 675/360
  3. Likewise, for the 2nd fraction, since 45 × 8 = 360,
    21/45 = 21 × 8/45 × 8 = 168/360
  4. Add the two like fractions:
    675/360 + 168/360 = 675 + 168/360 = 843/360
  5. 843/360 simplified gives 281/120
  6. So, 15/8 + 21/45 = 281/120
    In mixed form: 241/120

MathStep (Works offline)

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

Related:

© everydaycalculation.com