Add 28/4 and 20/8
1st number: 7 0/4, 2nd number: 2 4/8
28/4 + 20/8 is 19/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 8 is 8
Next, find the equivalent fraction of both fractional numbers with denominator 8 - For the 1st fraction, since 4 × 2 = 8,
28/4 = 28 × 2/4 × 2 = 56/8 - Likewise, for the 2nd fraction, since 8 × 1 = 8,
20/8 = 20 × 1/8 × 1 = 20/8 - Add the two like fractions:
56/8 + 20/8 = 56 + 20/8 = 76/8 - 76/8 simplified gives 19/2
- So, 28/4 + 20/8 = 19/2
In mixed form: 91/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/4+20/8 28/4+40/8 28/8+20/8 28/4+20/16 84/4+20/8 28/4+60/8 28/12+20/8 28/4+20/24 28/20+20/8 28/4+20/40 28/4+20/56