Add 28/12 and 20/75
1st number: 2 4/12, 2nd number: 20/75
28/12 + 20/75 is 13/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 75 is 300
Next, find the equivalent fraction of both fractional numbers with denominator 300 - For the 1st fraction, since 12 × 25 = 300,
28/12 = 28 × 25/12 × 25 = 700/300 - Likewise, for the 2nd fraction, since 75 × 4 = 300,
20/75 = 20 × 4/75 × 4 = 80/300 - Add the two like fractions:
700/300 + 80/300 = 700 + 80/300 = 780/300 - 780/300 simplified gives 13/5
- So, 28/12 + 20/75 = 13/5
In mixed form: 23/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/12+20/75 28/12+40/75 28/24+20/75 84/12+20/75 28/12+60/75 28/36+20/75 28/60+20/75 28/84+20/75