Add 20/12 and 8/5
1st number: 1 8/12, 2nd number: 1 3/5
20/12 + 8/5 is 49/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 5 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 12 × 5 = 60,
20/12 = 20 × 5/12 × 5 = 100/60 - Likewise, for the 2nd fraction, since 5 × 12 = 60,
8/5 = 8 × 12/5 × 12 = 96/60 - Add the two like fractions:
100/60 + 96/60 = 100 + 96/60 = 196/60 - 196/60 simplified gives 49/15
- So, 20/12 + 8/5 = 49/15
In mixed form: 34/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/12+8/5 20/12+16/5 20/24+8/5 20/12+8/10 60/12+8/5 20/12+24/5 20/36+8/5 20/12+8/15 20/12+40/5 20/60+8/5 20/12+8/25 20/12+56/5 20/84+8/5 20/12+8/35