Add 64/20 and 7/18
1st number: 3 4/20, 2nd number: 7/18
64/20 + 7/18 is 323/90.
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,
64/20 = 64 × 9/20 × 9 = 576/180 - Likewise, for the 2nd fraction, since 18 × 10 = 180,
7/18 = 7 × 10/18 × 10 = 70/180 - Add the two like fractions:
576/180 + 70/180 = 576 + 70/180 = 646/180 - 646/180 simplified gives 323/90
- So, 64/20 + 7/18 = 323/90
In mixed form: 353/90
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 64/20+14/18 64/40+7/18 64/20+7/36 64/20+21/18 64/60+7/18 64/20+7/54 64/20+35/18 64/20+7/90 64/20+49/18