Add 54/20 and 7/18
1st number: 2 14/20, 2nd number: 7/18
54/20 + 7/18 is 139/45.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 18 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 20 × 9 = 180,
54/20 = 54 × 9/20 × 9 = 486/180 - Likewise, for the 2nd fraction, since 18 × 10 = 180,
7/18 = 7 × 10/18 × 10 = 70/180 - Add the two like fractions:
486/180 + 70/180 = 486 + 70/180 = 556/180 - 556/180 simplified gives 139/45
- So, 54/20 + 7/18 = 139/45
In mixed form: 34/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/20+14/18 54/40+7/18 54/20+7/36 54/20+21/18 54/60+7/18 54/20+7/54 54/20+35/18 54/20+7/90 54/20+49/18