Add 12/3 and 18/20
1st number: 4 0/3, 2nd number: 18/20
12/3 + 18/20 is 49/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 20 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 3 × 20 = 60,
12/3 = 12 × 20/3 × 20 = 240/60 - Likewise, for the 2nd fraction, since 20 × 3 = 60,
18/20 = 18 × 3/20 × 3 = 54/60 - Add the two like fractions:
240/60 + 54/60 = 240 + 54/60 = 294/60 - 294/60 simplified gives 49/10
- So, 12/3 + 18/20 = 49/10
In mixed form: 49/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/3+18/20 12/3+36/20 12/6+18/20 12/3+18/40 36/3+18/20 12/3+54/20 12/9+18/20 12/3+18/60 60/3+18/20 12/3+90/20 12/15+18/20 84/3+18/20 12/21+18/20