Add 18/20 and 5/30
18/20 + 5/30 is 16/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 30 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 20 × 3 = 60,
18/20 = 18 × 3/20 × 3 = 54/60 - Likewise, for the 2nd fraction, since 30 × 2 = 60,
5/30 = 5 × 2/30 × 2 = 10/60 - Add the two like fractions:
54/60 + 10/60 = 54 + 10/60 = 64/60 - 64/60 simplified gives 16/15
- So, 18/20 + 5/30 = 16/15
In mixed form: 11/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/20+5/30 18/20+10/30 18/40+5/30 18/20+5/60 54/20+5/30 18/20+15/30 18/60+5/30 18/20+5/90 90/20+5/30 18/20+25/30 18/20+35/30