Add 54/12 and 20/15
1st number: 4 6/12, 2nd number: 1 5/15
54/12 + 20/15 is 35/6.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 15 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 12 × 5 = 60,
54/12 = 54 × 5/12 × 5 = 270/60 - Likewise, for the 2nd fraction, since 15 × 4 = 60,
20/15 = 20 × 4/15 × 4 = 80/60 - Add the two like fractions:
270/60 + 80/60 = 270 + 80/60 = 350/60 - 350/60 simplified gives 35/6
- So, 54/12 + 20/15 = 35/6
In mixed form: 55/6
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/12+40/15 54/24+20/15 54/12+20/30 54/12+60/15 54/36+20/15 54/12+20/45 54/60+20/15 54/12+20/75 54/84+20/15