Add 80/12 and 20/30
1st number: 6 8/12, 2nd number: 20/30
80/12 + 20/30 is 22/3.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 30 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 12 × 5 = 60,
80/12 = 80 × 5/12 × 5 = 400/60 - Likewise, for the 2nd fraction, since 30 × 2 = 60,
20/30 = 20 × 2/30 × 2 = 40/60 - Add the two like fractions:
400/60 + 40/60 = 400 + 40/60 = 440/60 - 440/60 simplified gives 22/3
- So, 80/12 + 20/30 = 22/3
In mixed form: 71/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/12+40/30 80/24+20/30 80/12+20/60 80/12+60/30 80/36+20/30 80/12+20/90 80/60+20/30 80/84+20/30