Add 20/5 and 54/12
1st number: 4 0/5, 2nd number: 4 6/12
20/5 + 54/12 is 17/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 12 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 5 × 12 = 60,
20/5 = 20 × 12/5 × 12 = 240/60 - Likewise, for the 2nd fraction, since 12 × 5 = 60,
54/12 = 54 × 5/12 × 5 = 270/60 - Add the two like fractions:
240/60 + 270/60 = 240 + 270/60 = 510/60 - 510/60 simplified gives 17/2
- So, 20/5 + 54/12 = 17/2
In mixed form: 81/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/5+54/12 20/10+54/12 20/5+54/24 60/5+54/12 20/15+54/12 20/5+54/36 20/25+54/12 20/5+54/60 20/35+54/12 20/5+54/84