Add 30/20 and 80/12
1st number: 1 10/20, 2nd number: 6 8/12
30/20 + 80/12 is 49/6.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 12 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 20 × 3 = 60,
30/20 = 30 × 3/20 × 3 = 90/60 - Likewise, for the 2nd fraction, since 12 × 5 = 60,
80/12 = 80 × 5/12 × 5 = 400/60 - Add the two like fractions:
90/60 + 400/60 = 90 + 400/60 = 490/60 - 490/60 simplified gives 49/6
- So, 30/20 + 80/12 = 49/6
In mixed form: 81/6
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/20+80/12 30/40+80/12 30/20+80/24 90/20+80/12 30/60+80/12 30/20+80/36 30/20+80/60 30/20+80/84