Add 20/4 and 28/8
1st number: 5 0/4, 2nd number: 3 4/8
20/4 + 28/8 is 17/2.
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,
20/4 = 20 × 2/4 × 2 = 40/8 - Likewise, for the 2nd fraction, since 8 × 1 = 8,
28/8 = 28 × 1/8 × 1 = 28/8 - Add the two like fractions:
40/8 + 28/8 = 40 + 28/8 = 68/8 - 68/8 simplified gives 17/2
- So, 20/4 + 28/8 = 17/2
In mixed form: 81/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/4+28/8 20/4+56/8 20/8+28/8 20/4+28/16 60/4+28/8 20/4+84/8 20/12+28/8 20/4+28/24 20/4+28/40 20/28+28/8 20/4+28/56