Add 54/18 and 20/14
1st number: 3 0/18, 2nd number: 1 6/14
54/18 + 20/14 is 31/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 14 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 18 × 7 = 126,
54/18 = 54 × 7/18 × 7 = 378/126 - Likewise, for the 2nd fraction, since 14 × 9 = 126,
20/14 = 20 × 9/14 × 9 = 180/126 - Add the two like fractions:
378/126 + 180/126 = 378 + 180/126 = 558/126 - 558/126 simplified gives 31/7
- So, 54/18 + 20/14 = 31/7
In mixed form: 43/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/18+40/14 54/36+20/14 54/18+20/28 54/18+60/14 54/18+20/42 54/90+20/14 54/18+20/70 54/18+20/98